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The Most Common Cognitive Bias

Veritasium

21M subscribers • 15 videos on Rounds

YouTube
  • Recommended by 3 people, in Hacker News, across 3 different months.
  • Presented by Derek Muller, as the video describes them

For anyone, no background needed. Education, not medical advice.

17M views12 years ago3 recommendations

Brain and nervesEvidence and public healthNeuroscienceHealth claims and misinformation

Derek Muller demonstrates confirmation bias through a number sequence game, showing how people seek to confirm rather than falsify their hypotheses.

Can you figure out the rule? Did you see the exponents pattern? youtu.be/AVB8vRC6HIY Why do you make people look stupid? bit.ly/12Fmlpl How do you investigate hypotheses? Do you seek to confirm your theory - looking for white swans? Or do you try to find black swans? I was startled at how hard it was for people to investigate number sets that didn't follow their hypotheses, even when their method wasn't getting them anywhere. In the video I say "when people came to Australia..." by which I meant, "when Europeans who believed all swans were white came to Australia..." I did not mean any offence to Indigenous Australians who were already in Australia at that time. Please accept my apologies for the poor phrasing if you were offended by it. This video was inspired by The Black Swan by Nassim Taleb and filmed by my mum. Thanks mum! Partly my motivation came from responses to my Facebook videos - social media marketers saying 'Facebook ads have worked for me so there can't be fake likes.' Just because you have only seen white swans, doesn't mean there are no black ones. And in fact marketers are only looking for white swans. They think it was invalid of me to make the fake Virtual Cat page: 'well of course if it's a low quality page you're going to get low quality likes.' But my point is this is black swan bait, something they would never make because their theory is confident in the exclusive existence of white swans.

Why it's here

3 people recommend this

What people say. Recommended for its clear demonstration of confirmation bias and the importance of trying to disprove one's own hypotheses.

drhdylan88in Hacker News • Recommends

On “A Quick Puzzle to Test Your Problem Solving”

Veritasium, a pretty interesting youtube channel, posted a video on this experiment a while back. I found the discussion afterwards to be more thought-provoking than this article. link to this video

nightcrackerin Hacker News • Recommends

On “Dogs distinguish human intentional and unintentional action”

…amount of times and the dog consistently has different behavior between A and B, you can rule this null hypothesis out. That is the real reason we always 'assume the worst'. Because 'assume the worst' is the easiest to scientifically rule out. EDIT: I would suggest this video by Veritasium, which also touches on this, at a very fundamental level: link to this video .…

avianlyricin Hacker News • Recommends

On “Let me repeat that back to you”

Veritasium has a great video1 about people’s cognitive bias towards using examples that prove their mental model, rather than using examples that disprove their mental model. But if you want to actually confirm you have accurate understanding of something, testing examples that don't fit your metal model is the workable methodology (i.e. use a null hypothesis). Testing examples that do match your mental model only proves your model partially matches the actual model, but it does very little to actually identify misunderstandings, or improve your understanding. 1 link to this video

m4r71nin Hacker News • Mentions

On “A Quick Puzzle to Test Your Problem Solving”

Derek Muller of Veritasium has done this test over a year ago on people in one of his videos: link to this video I've given the test to various people since then and never once came across someone who'd guess it right away, or within a short period of time. The breaking time came usually after a few minutes when they gave up and started throwing out random numbers that coincidentally did not meet the rule. Once you hit the first "No", it took a very short time to figure out the rule for almost everyone.

jerfin Hacker News • Mentions

On “A Quick Puzzle to Test Your Problem Solving”

This is now the fourth time I've seen this exact rule. Another example: link to this video It's probably not "fair" to say I got it in zero... but I did. :) Now that the NYT has done it, this puzzle has probably attained enough popularity now that you really ought to change it up a bit now if you're going to run it yourself. Granted, the space of hypotheses as simple as "increasing/decreasing" is pretty small, but your ability to fool people with the first sample run is almost unbounded, so that helps.

Strilancin Hacker News • Mentions

On “Steam hit by major security breach”

They were thinking about how to make it work instead of how to make it break. Classic mistake (e.g. 1). 1: link to this video

oneofthefirstin Hacker News • Mentions

On “In ‘learning trap’ experiment, adults leap to conclusions while children explore”

Very interesting! This reminds me of a Veritasium video I watched years ago, called “The most common cognitive bias” 1. People don’t explore solution spaces as effectively as they think they do. 1 link to this video

adverblyin Hacker News • Mentions

On “Intelligent people take longer to solve hard problems”

Related: link to this video TL;DW: I have a rule and you need to figure it out. The rule relates to a sequence of three numbers. You can propose a sequence and I’ll tell you yes/no if it meets the rule. I’ll give you the first sequence to get you started: sequence: 2,4,8 passes: Yes