In a lake, there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake?
If it takes five machines 5 minutes to make five widgets, how long would it take 100 machines to make 100 widgets?
This finding wouldn’t surprise Kahneman, who admits in “Thinking, Fast and Slow” that his decades of groundbreaking research have failed to significantly improve his own mental performance. “My intuitive thinking is just as prone to overconfidence, extreme predictions, and the planning fallacy”—a tendency to underestimate how long it will take to complete a task—“as it was before I made a study of these issues,” he writes.
ἓν οἶδα ὅτι οὐδὲν οἶδα
Which half? The answer is either 1 or 47.
If you're being pedantic about which half, isn't the answer either 47 or 48?
I don't get the bat and the ball question, why isn't the ball 1 cent? Shouldn't the ball be anything less than a 56/54 split?
twoleftfeet, I got them right (I assume)
Two trains are on the same track a distance 100 km apart heading towards one another, each at a speed of 50 km/h. A fly starting out at the front of one train, flies towards the other at a speed of 75 km/h. Upon reaching the other train, the fly turns around and continues towards the first train. How many kilometers does the fly travel before getting squashed in the collision of the two trains?
I haven't had a chance to read it yet, but I'm getting the impression that the New Yorker article is... maybe a bit confused? Or does the study actually consider inability to set up an algebra problem to be an example of a cognitive bias?
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