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“So there came a time in which the ideas, although accumulated very slowly, were all accumulations not only of practical and useful things, but great accumulations of all types of prejudices, and strange and odd beliefs.
Then a way of avoiding the disease was discovered. This is to doubt that what is being passed from the past is in fact true, and to try to find out ab initio again from experience what the situation is, rather than trusting the experience of the past in the form in which it is passed down. And that is what science is: the result of the discovery that it is worthwhile rechecking by new direct experience, and not necessarily trusting the [human] race[’s] experience from the past. I see it that way. That is my best definition…Science is the belief in the ignorance of experts.“
–Richard P Feynman, What is Science? (1968)[1]

TruthSift.com is a platform designed to support and guide individuals or crowds to rationality, and make them smarter collectively than any unaided individual or group. (Free) Members use TruthSift to establish what can be established, refute what can’t be, and to transparently publish the demonstrations. Anyone can browse the demonstrations and learn what is actually known and how it was established. If they have a rational objection, they can post it and have it answered.

Whether in scientific fields such as climate change or medical practice, or within the corporate world or political or government debate, or on day to day factual questions, humanity hasn’t had a good method for establishing rational truth. You can see this from consequences we often fail to perceive:
Peer reviewed surveys agree: A landslide majority of medical practice is *not* supported by science [2,3,4]. Scientists are often confused about the established facts in their own field [5]. Within fields like climate science and vaccines, that badly desire consensus, no true consensus can be reached because skeptics raise issues that the majority brush aside without an established answer (exactly what Le Bon warned of more than 100 years ago[6]). Widely consulted sources like Wikipedia are reported to be largely paid propaganda on many important subjects [7], or the most popular answer rather than an established one [8]. Quora shows you the most popular individual answer, generated with little or no collaboration, and often there is little documentation of why you should believe it. Existing systems for crowd sourced wisdom largely compound group think, rather than addressing it. Existing websites for fact checking give you someone’s point of view.

Corporate or government planning is no better. Within large organizations, where there is inevitably systemic motivation to not pass bad news up, leadership needs active measures to avoid becoming clueless as to the real problems [9]. Corporate or government plans are subject to group think, or takeover by employee or other interests competing with the mission. Individuals who perceive mistakes have no recourse capable of rationally pursuading the majority, and may anyway be discouraged from speaking up by various consequences[6].

TruthSift is designed to solve all these problems. TruthSift realizes in your browser the Platonic ideal of the scientific literature, but TruthSift applies it to everything, and makes it tangible and lightweight, extended to a much lower hurdle for publishing. On a public TruthSift diagram, members (or on a Private diagram, members you have invited), who believe they can prove or refute a statement, can post their proof or refutation exactly where it is relevant. TruthSift logically propagates the consequences of each contribution, graphically displaying how it impacts the establishment status of all the others, drawing statements established by the combined efforts in thick borders, and statements refuted in thin. Statements are considered established only when they have an established demonstration, one with every posted challenge refuted.

An example topic. The topic statement n0 is currently refuted, because its only proof is refuted. The statement menu is shown open in position to add a proof to this proof. The topic statement is gold, pro statements are blue, con statements are red. Proof connectors are black, challenges red, remarks purple, assumptions (not shown) blue. Statements show the title, to see the body select “View Statement” or hover mouse.

Fig 1: An example topic. The topic statement n0 is currently refuted, because its only proof
is refuted. The statement menu is shown open in position to add a proof to this proof.
The topic statement is gold, pro statements are blue, con statements are red. Proof
connectors are black, challenges red, remarks purple, assumptions (not shown) blue.
Statements show the title. On the actual Topic the body can be seen by selecting
the statement and “View Statement” or hovering the mouse.

What is a proof? According to the first definition at Dictionary.com a proof is: “evidence sufficient to establish a thing as true, or to produce belief in its truth.” In mathematics, a proof is equivalent to a proof tree that starts at axioms, or previously established results, which the participants agree to stipulate, and proceeds by a series of steps that are individually unchallengeable. Each such step logically combines several conclusions previously established and/or axioms. The proof tree proceeds in this way until it establishes the stated proved conclusion. Mathematicians often raise objections to steps of the proof, but if it is subsequently established that all such objections are invalid, or if a workaround is found around the problem, the proof is accepted.

The Scientific literature works very similarly. Each paper adds some novel argument or evidence that previous work is true or is not true or extends it to establish new results. When people run out of valid, novel reasons why something is proved or is not proved, what remains is an established theory, or a refutation of it or of all its offered proofs.

The view focused on the topic statement of a Topic diagramming the discussion in Galileos: Dialogues Concerning the Two Chief World Views. The black triangle indicates other incoming edges not shown. For complex diagrams, it is often best to walk around in focused view centered on each statement in turn.

Fig 2: The view focused on the topic statement of a Topic diagramming the discussion in:
Galileo’s: Dialogues Concerning the Two Chief World Views.
The black triangle indicates other incoming edges not shown. For complex diagrams,
it is often best to walk around in focused view centered on each statement in turn.

TruthSift is a platform for diagramming this process and applying it to any statements members care to propose to establish or refute. One may state a topic and add a proof tree for it, which is drawn as a diagram with every step and connection explicit. Members may state a demonstration of some conclusion they want to prove, building from some statements they assert are self-evident or that reference some authority they think trustworthy, and then building useful intermediate results that rationally follow from the assumptions, and building on until reaching the stated conclusion. If somebody thinks they find a hole in a proof at any step, or thinks one of the original assumptions need further proof, they can challenge it, explaining the problem they see. Then the writer of the proof (or others if its in collaboration mode) may edit the proof to fix the problem, or make clearer the explanation if they feel the challenger was simply mistaken, and may counter-challenge the challenge explaining that it had been resolved or mistaken. This can go on recursively, with someone pointing out a hole in the proof used by the counter-challenger that the challenge was invalid. On TruthSift the whole argument is laid out graphically and essentially block-chained, which should prevent the kind of edit-wars that happen for controversial topics on Wikipedia. Each challenge or post should state a novel reason, and when the rational arguments are exhausted, as in mathematics, what remains is either a proof of the conclusion or a refutation of it or all of its proofs.

As statements are added to a diagram, TruthSift keeps track of what is established and what refuted, drawing established statements’ borders and their outgoing connectors thick, and refuted statements’ borders and their outgoing connectors thin so viewers can instantly tell what is currently established and what refuted. TruthSift computes this by a simple algorithm that starts at statements with no incoming assumptions, challenges, or proofs, which are thus unchallenged as assertions that prove themselves, are self evident, or appeal to an authority everybody trusts. These are considered established. Then it walks up the diagram rating statements after all their parents have been rated. A statement will be established if all its assumptions are, none of its challenges are, and if it has proofs, at least one is established. (We support challenges requesting a proof be added to a statement which neither has one added nor adequately proves itself.) Otherwise, that is if a statement has an established challenge, or has refuted assumptions, or all of its proofs are refuted, it is refuted.

To understand why a statement is established or refuted, center focus on it, so that you see it and its parents in the diagram. If it is refuted, either there is an established challenge of it, or one of its assumptions is refuted, or all of its proofs are. If it is not refuted, it is established. Work your way backward up the diagram, centering on each statement in turn, and examine the reasons why it is established or refuted.

Fig 3: An example topic.
Fig 3: An example topic.

Effective contribution to TruthSift diagrams involves mental effort. This is both a hurdle and a feature. TruthSift teaches Critical Thinking. First you think about your Topic Statement. How actually should you specify Vaccine Safety or Climate Change, so it covers what you want to establish or refute, and so it is amenable to rational discussion? There is no place you could go to see that well specified now, and can you properly assure it without properly specifying it? Next you think about the arguments for your topic statement, and those against it, and those against the arguments for, and those for the arguments for, and the arguments against the arguments against, and so on until everybody runs out of arguments, when what is left is a concise rational analysis of what is established and why. The debate is settled point by point. The process naturally subdivides the field into sub-topics where different expertise’s come into play, promoting true collective wisdom and understanding.

For TruthSift to work properly, posters will have to respect the guidelines and post only proof or challenge statements that they believe rationally prove or refute their target and are novel to the diagram (or also novel additional evidence as assumptions or remarks or tests, which are alternative connector types). Posts violating the guidelines may be flagged and removed, and consistent violators as well. Posts don’t have to be correct, that’s what challenges are for, but they have to be honest attempts, not spam or ad hominem attacks. Don’t get hung up on whether a statement should be added as a proof or an assumption of another. Frequently you want to assemble arguments for a proposition stating something like “the preponderance of the evidence indicates X”, and these arguments are not individually necessary for X, nor are they individually proofs of X. It is safe to simply add them as proofs. They are not necessary assumptions, and if not enough of them are established, the target may be challenged on that basis. The goal is a diagram that transparently explains a proof and what is wrong with all the objections people have found plausible.

For cases where members disagree on underlying assumptions or basic principles, stipulation is available. If one or more statements are stipulated, statements are shown as conditionally true if established based on the stipulations and as conditionally false if refuted based on the stipulations. The challenges to the stipulation are also shown. TruthSift supports reasoning from different fundamental assumptions, but requires being explicit about it when challenged.
Probability mode supports the intuitive construction of probabilistic models, and evaluates the probability of each statement in the topic marginalizing over all the parameters in the topic. With a little practice these allow folding in various connections and evidence. These could be used for collaborative, verified, risk models; to support proofs with additional confidence tests; to reason about hidden causes; or many other novel applications

Fig 4: Detail from a topic showing an established conclusion some may find surprising. Rebut it if you can.
Fig 4: Detail from a topic showing an established conclusion some may find surprising. Please
Rebut it if you can. Dashed edges represent citation into the literature. Title is shown for each
statement, on actual topic select “View Statement” to see body.

Basic Membership is free. In addition to public diagrams, debating the big public issues, private diagrams are available for personal or organizational planning or to exclude noise from your debate. Private diagrams have editing and/or viewing by invitation only. Come try it. http://TruthSift.com

TruthSift’s mission is to enable publication of a transparent exposition of human knowledge, so that anyone may readily determine what is truth and what fiction, what can be established by valid Demonstration and what can’t, and so that anyone can read and understand that Demonstration.
We intend the process of creating this exposition to lead to vastly increased understanding and improved critical thinking skills amongst our members and beyond. We hope to support collaborative human intelligences greater than any intelligence previously achieved on the planet, both in the public domain and for members’ private use.

And please, I’d love feedback or questions. [email protected]

1. Richard P Feynman, What is Science? (1968) http://www-oc.chemie.uni-regensburg.de/diaz/img_diaz/feynman_what-is-science_68.pdf
2. Assessing the Efficacy and Safety of Medical Technologies, Office of Technology Assessment, Congress of the United States (1978)
http://www.fas.org/ota/reports/7805.pdf
3. Jeannette Ezzo, Barker Bausell, Daniel E. Moerman, Brian Berman and Victoria Hadhazy (2001). REVIEWING THE REVIEWS . International Journal of Technology Assessment in Health Care, 17, pp 457-466. http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=101041
4. John S Garrow BMJ. 2007 Nov 10; 335(7627): 951.doi:10.1136/bmj.39388.393970.1F PMCID: PMC2071976
What to do about CAM?: How much of orthodox medicine is evidence based?
http://www.dcscience.net/garrow-evidence-bmj.pdf
5. S. A. Greenberg, “How citation distortions create unfounded authority: analysis of a citation network”, BMJ 2009;339:b2680
http://www.bmj.com/content/339/bmj.b2680
6. Gustav Le Bon, The Crowd, (1895), (1995) Transaction Publishers New Edition Edition
7. S Attkisson, “Astroturf and manipulation of media messages”, TEDx University of Nevada, (2015) https://www.youtube.com/watch?v=-bYAQ-ZZtEU
8. Adam M. Wilson , Gene E. Likens, Content Volatility of Scientific Topics in Wikipedia: A Cautionary Tale 2015 DOI: 10.1371/journal.pone.0134454 http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0134454
9. Kiira Siitari, Jim Martin & William W. Taylor (2014) Information Flow in Fisheries Management: Systemic Distortion within Agency Hierarchies, Fisheries, 39:6, 246-250, http://dx.doi.org/10.1080/03632415.2014.915814

Friends have been asking me to write something on space exploration and my campaign policy on it, so here it is just out on TechCrunch:


When people think about rocket ships and space exploration, they often imagine traveling across the Milky Way, landing on mysterious planets and even meeting alien life forms.

In reality, humans’ drive to get off Planet Earth has led to tremendous technological advances in our mundane daily lives — ones we use right here at home on terra firma.

I recently walked through Boston’s Logan International Airport; a NASA display reminded me that GPS navigation, anti-icing systems, memory foam and LED lights were all originally created for space travel. Other inventions NASA science has created include the pacemaker, scratch-resistant lenses and the solar panel.

These types of advancements are one of the most important reasons I am hoping our next U.S. president will try to jump-start the American space program — both privately and publicly. Unfortunately, it doesn’t appear any of them are talking about the issue. But they should be. As we enter the transhumanist age — the era of bionic limbs, brain implants and artificial intelligence — space exploration might once again dramatically lead us forward in discovering the most our species can become.

Read more

ACTON, Australia, May 16 (UPI) — Researchers in Australia recently found a collection of spherules, evidence of a massive asteroid that struck Earth as it was still forming.

Spherules are tiny glass beads formed from material vaporized in the intense heat of an asteroid impact. They were found in northwestern Australia by a team of geologists led by Andrew Glikson of the Australian National University.

The glass beads were found scattered among ancient ocean sediments dated to the middle of the Archean Eon — 3.46 billion years ago. The spread of the spherules deposit suggests the impact would have left a crater between 12 and 18 miles in diameter.

Read more

My new Vice Motherboard article on environmentalism and why going green isn’t enough. Only radical technology can restore the world to a pristine condition—and that requires politicians not afraid of the future:


I’m worried that conservatives like Cruz will try to stop new technologies that will change our battle in combating a degrading Earth

But there are people who can save the endangered species on the planet. And they will soon dramatically change the nature of animal protection. Those people may have little to do with wildlife, but their genetics work holds the answer to stable animal population levels in the wild. In as little as five years, we may begin stocking endangered wildlife in places where poachers have hunted animals to extinction. We’ll do this like we stock trout streams in America. Why spend resources in a losing battle to save endangered wildlife from being poached when you can spend the same amount to boost animal population levels ten-fold? Maye even 100-fold. This type of thinking is especially important in our oceans, which we’ve bloody well fished to near death.

As a US Presidential candidate who believes that all problems can be solved by science, I believe the best way to fix all of our environmental dilemmas is via technological innovation—not attempting to reverse our carbon footprint, recycle more, or go green.

As noted earlier, the obvious reason going green doesn’t work—even though I still think it’s a good disciplinary policy for humans—is the sheer impossibility of getting the developed world to stop… well, developing. You simply cannot tell an upcoming Chinese family not to drive cars. And you can’t tell a burgeoning Indian city to only use renewable resources when it’s cheaper to use fossil fuels. You also can’t tell indigenous Brazilian parents to stop poaching when their children are hungry. These people will not listen. They want what they want, and are willing to partially destroy the planet to get it—especially when they know the developed world already possesses it.

Read more

Apparently, Rodney Brooks, AI pioneer (@MIT CS & AI Lab; iRobot), is skeptical about artificial superintelligence:

“The difference between science fiction robots and real-life creations was the concept of robots being able to learn and teach themselves independently. A person can generalise, but we don’t have that kind of generalisation in any of these AI learning systems. So relax is my message.”

Or is he? This article by ABC Australia was focused on the same unfortunate meme, the unlikely Terminator which nobody has ever seriously suggested is realistic: “The Terminator series of movies foretold the future of humans and robots with Skynet becoming self-aware and launching its own nuclear war. But Professor Brooks said that was just science fiction.”

What of serious singularity hypotheses?

Read more

I couldn’t agree more…aggression and recklessness.


Stephen Hawking may be getting some Hollywood love for “The Theory of Everything,” a biopic about his life that earned actor Eddie Redmayne the best actor Oscar at last night’s Academy Awards. But that hasn’t stopped the world-famous physicist from issuing yet another warning about humanity’s impending doom.

Human aggression threatens to destroy us all, Hawking said during a tour of London’s Science Museum last week. The remark was in response to a question about what human shortcomings he would most like to alter. Hawking suffers from a neurological disease similar to Lou Gehrig’s disease, or amyotrophic lateral sclerosis (ALS).

A major nuclear war would be the end of civilization and possibly the human race, the Cambridge University professor said. Hawking called for greater empathy, and added that human space exploration is necessary as “life insurance” for humanity. [Fight, Fight, Fight: The History of Human Aggression].

Read more

COLORADO SPRINGS — Jeff Bezos, founder of Amazon.com, could not be more clear about what he believes is mankind’s future.

“I want millions of people living and working in space. I want us to be a space-faring civilization,” Bezos told a packed audience at the Space Symposium on Tuesday in Colorado Springs.

“My motivation is, I don’t want Plan B to be, ‘Good news, Earth got destroyed by a big comet but we live on Mars.’ I think we need to explore and utilize space in order to save the Earth,” he said, referring to the need to shift industrial manufacturing to space to limit the impact on Earth’s resources.

Read more

The growth of human and computer intelligence has triggered a barrage of dire predictions about the rise of super intelligence and the singularity. But some retain their skepticism, including Dr. Michael Shermer, a science historian and founding publisher of Skeptic Magazine.

quote-i-m-a-skeptic-not-because-i-do-not-want-to-believe-but-because-i-want-to-know-michael-shermer-71-29-72

The reason so many rational people put forward hypotheses that are more hype than high tech, Shermer says, is that being smart and educated doesn’t protect anyone from believing in “weird things.” In fact, sometimes smart and educated people are better at rationalizing beliefs that they hold for not-so-rational reasons. The smarter and more educated you are, the better able you are to find evidence to support what you want to be true, suggests Shermer.

“This explains why Nobel Prize winners speak about areas they know nothing about with great confidence and are sure that they’re right. Just because they have this great confidence of being able to do that (is) a reminder that they’re more like lawyers than scientists in trying to marshal a case for their client,” Shermer said. “(Lawyers) just put together the evidence, as much as you can, in support of your client and get rid of the negative evidence. In science you’re not allowed to do that, you’re supposed to look at all the evidence, including the counter evidence to your theory.”

The root of many of these false hypotheses, Shermer believes, is based in religion. Using immortality as an example, Shermer said the desire to live forever has strong parallels to religious beliefs; however, while there are many making prophecies that technology will insure we’ll live forever, too many people in groups throughout history have made similar yet unfulfilled promises.

“What we’d like to be true is not necessarily what is true, so the burden of proof is on them to go ahead and make the case. Like the cryonics people…they make certain claims that this or that technology is going to revive people that are frozen later…I hope they do it, but you’ve got to prove otherwise. You have to show that you can actually do that.”

Even if we do find a way to live forever, Shermer notes the negatives may outweigh the positives. It’s not just living longer that we want to achieve, but living longer at a high quality of life. There’s not much benefit in living to age 150, he adds, if one is bedridden for 20 or 30 years.

Instead, Shermer compares the process to the evolution of the automobile. While the flying cars promised by 1950’s-era futurists haven’t come to pass, today’s automobile is exponentially smarter and safer than those made 50 or 60 years ago. While forward thinkers have had moments of lucid foresight, humans also have a history of making technology predictions that often don’t turn out to be realized. Often, as is the case with the automobile, we don’t notice differences in technological changes because the changes happen incrementally each year.

“That’s what’s really happening with health and longevity. We’re just creeping up the ladder slowly but surely. We’ve seen hip replacements, organ transplants, better nutrition, exercise, and getting a better feel for what it takes to be healthy,” Shermer says. “The idea that we’re gonna’ have one big giant discovery made that’s going to change everything? I think that’s less likely than just small incremental things. A Utopian (society) where everybody gets to live forever and they’re infinitely happy and prosperous and so on? I think it’s unrealistic to think along those lines.”

Looking at the future of technology, Shermer is equally reticent to buy in to the predictions of artificial intelligence taking over the world. “I think the concern about AI turning evil (and) this dystopian, science fiction perspective is again, not really grounded in reality. I’m an AI optimist, but I don’t think the AI pessimists have any good arguments,” Shermer said

While we know, for the most part, which types of governments work well, we don’t have any similar precedent for complex AI systems. Humans will remain in control and, before we start passing laws and restrictions to curb AI out of fear, Shermer believes we should keep improving our computers and artificial intelligence to make life better, evaluating and taking action as these systems continue to evolve.