Author: Rebecca

A closer look at the recently published UN Human Rights Council report about the Khan Shaykhun chemical attack

UN HRC Report 36/55

On September 6, 2017, the UN Human Rights Council (HRC) published a report addressing the April 4 Khan Shaykhun attack. The report found “reasonable grounds to believe Syrian forces dropped an aerial bomb dispersing sarin in Khan Shaykhun.”  This finding seems to bolster the hypothesis that the Syrian Army was responsible for the attack. That would justify inclusion in the related Rootclaim analysis. However, a closer look reveals that this is not the case.

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Estimating Initial Probability: Don’t Forget the Prior!

Overlooking the Initial Probability

One common trap of human intuition is failing to take into account the plausibility of an event before considering the context-specific evidence of the case at hand. Without knowing how plausible a hypothesis is in general, it is easy to fall into the trap (test yourself!) of overestimating the initial probability for inherently unlikely theories. This is known as the Prosecutor’s fallacy, one of the main flaws of human reasoning.

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Rootclaim: Calculating Reality

Today we’re officially announcing the launch of Rootclaim – a collaborative analysis platform that outperforms human reasoning in understanding complex issues.

Calculating All Sides of the Story

The platform integrates all available evidence, assesses it for credibility and then uses probabilistic models to reach conclusions about the likelihood of competing hypotheses.
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When We Estimate the Inputs, How Valid Are the Outputs?

One of the arguments against the validity of the Bayesian approach is that, in some cases, it’s hard to pin a precise number on a probability. When we can find good and relevant statistics to back up the assessment of a likelihood, this isn’t such an issue. But in the real world, some of the time we don’t have good numbers. Or we have the numbers on something similar to what we’re looking for – but not quite the same thing.

So what happens in those cases when we have to estimate the inputs?

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Cognitive Biases – Why They Help and Why They Hurt

How do humans deal with complex problems?


One of the biggest problems we as humans have to overcome when thinking about complex problems is our set of innate cognitive biases. Evolutionarily speaking, we’ve developed a set of specific cognitive strategies to help us understand the world better and more efficiently – but they don’t come without serious trade-offs.

Buster Benson (of Better Humans) wrote a great article about the constellation of cognitive biases and categorized them according to what kind of mental problem they attempt to address. As he explains, these biases may have developed for a good reason, but they also introduce systematic mental errors into our reasoning:

Every cognitive bias is there for a reason — primarily to save our brains time or energy. If you look at them by the problem they’re trying to solve, it becomes a lot easier to understand why they exist, how they’re useful, and the trade-offs (and resulting mental errors) that they introduce.

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Dealing with the Unknown in Rational Analyses

Here’s a thought-provoking article by David J. Spiegelhalter and Hauke Riesch on how to deal with the unknown in a rational analysis—not just things we know are unknown, but deeper uncertainties.

Take, for example, the following case study:

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Why Human Intuition Falls Short: We Just Don’t Get Probability

Up to a certain point, humans have an intuitive understanding of basic probability. Toddlers can observe probabilistic patterns and grasp their meaning without any formal instruction, and we naturally use an internal process that approximates Bayesian inference to estimate physical states by combining previous knowledge with new sensory information.

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How Rootclaim Analyses are Different (and Better)

What makes a Rootclaim analysis better than any other approach?

Rootclaim is more objective and comprehensive than any other method of reasoning.

The Rootclaim system improves on other approaches by forcing each hypothesis to build a complete, unbroken storyline that explains all of the evidence without cherry-picking, or providing contradictory explanations to different pieces of information. By requiring each competing version of events to play out to its complete logical conclusion, Rootclaim conquers one of the most difficult weaknesses of mass mis-reasoning: allowing inconsistent, illogical, and incomplete explanations to masquerade as reasonable, coherent, and even convincing possibilities to those without the tools to break the arguments down and ensure mathematical and logical validity.

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Building a Better Model for Uncertainty

Math is great for dealing with certainties…

In mathematics there is a unifying language that links past discoveries and current theories. We can take a complete block of previous scholarship, plug it into a block of new scholarship, and they will fit perfectly and exactly with one another.

The beauty of mathematics as a system of knowledge is that it allows us to deal with complex problems by building on past knowledge. Once someone formalizes their findings in a proven mathematical model, the whole scientific community can seamlessly integrate it into their research and reach a better understanding of the world we live in.

For example, once Pythagoras proved that a2 + b2 = c2, other mathematicians could use that formula whenever they encountered a right triangle, without having to prove it again each time.

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Introducing Rootclaim: The Rational Revolution

Information Overload

Today’s world is complex. To make sense of it, we have to take in – and filter out – a huge amount of information. The problem is, it’s incredibly difficult to get to the bottom line when there’s so much noise to sift through.

Cherry-Picking the Evidence

Reporting is often biased. Governments, politicians, businesses, news organizations and interest groups can easily cherry-pick the evidence, giving you an incomplete or inconsistent picture of reality. If a story makes splashy headlines, or advances a certain political and/or financial agenda, then you’re more likely to hear about it.

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