question answer
QUESTION They are hundreds brain teaser in hundreds of books, websites,… 1 / Select a brain teaser you like particularly, not seen in the lecture, 2 / And tell what’s the underline message (short paragraph, from1 to 5 lines max.) 3 / As usual, submit your work in the peer-assessment rubric 4 / Then, if you want, post it also on the forum. And vote for the one you prefer. The 20 that received most votes will receive 5 bonus points.
ANSWER 1.Brain Teaser A lilypad doubles in size each day. In 28 days, the lilypad will cover the entire pond. Question : In how many days will the pond be half covered?
Answer : 27 days 2.Underlying Message This illustrates D.Kahneman's idea of two systems of thinking i.e Fast and Slow Thinking(http://en.wikipedia.org/wiki/Thinking,_Fast_and_Slow). Our brain uses heuristics (mental shortcuts) to make life easier. In the above example, our normal intuitive answer (Fast Thinking) would be 14 days i.e half of 28 days. If one were to apply Slow Thinking we would arrive at the logical answer of 27 days which is the correct answer. One first has to be aware of the two systems and apply conscious effort to apply both Fast and Slow in appropriate situations.
PEER REVIEW COMMENTS
peer 1 → [This area was left blank by the evaluator.] peer 2 → Well done. I am applying my slow thinking to give your grade, 5 points my consideration. peer 3 → [This area was left blank by the evaluator.] peer 4 → [This area was left blank by the evaluator.] peer 5 → [This area was left blank by the evaluator.]
ANSWER 1.Brain Teaser A lilypad doubles in size each day. In 28 days, the lilypad will cover the entire pond. Question : In how many days will the pond be half covered?
Answer : 27 days 2.Underlying Message This illustrates D.Kahneman's idea of two systems of thinking i.e Fast and Slow Thinking(http://en.wikipedia.org/wiki/Thinking,_Fast_and_Slow). Our brain uses heuristics (mental shortcuts) to make life easier. In the above example, our normal intuitive answer (Fast Thinking) would be 14 days i.e half of 28 days. If one were to apply Slow Thinking we would arrive at the logical answer of 27 days which is the correct answer. One first has to be aware of the two systems and apply conscious effort to apply both Fast and Slow in appropriate situations.
PEER REVIEW COMMENTS
peer 1 → [This area was left blank by the evaluator.] peer 2 → Well done. I am applying my slow thinking to give your grade, 5 points my consideration. peer 3 → [This area was left blank by the evaluator.] peer 4 → [This area was left blank by the evaluator.] peer 5 → [This area was left blank by the evaluator.]
