Comment on Jigsaw Trolley Problem
flora_explora@beehaw.org 1 day agoThanks for the explanation, but I cannot follow on this line
Since he knows that Bernard doesn’t know given just the row, each ball in that row is in a column that contains more than one ball.
Why is that? Why couldn’t it be A2 or A3? In this case neither Albert nor Bertrand could tell what row/column this was either, because it would be in a row/column with another ball. How can you exclude any row with overlap with any single-ball columns?
hodgepodgin@lemmy.zip 12 hours ago
It couldn’t be row A or B because there would then be a possibility the ball was in A6 or B5 and that Bernard actually did know where the ball was. Albert says he knows Bernard doesn’t know where the ball is, which means he is 100% confident, and the only rows that allow for that confidence are rows C and D, because each ball in each row is not alone in its column.
flora_explora@beehaw.org 1 hour ago
Oh of course, I didn’t consider the “I know you don’t either” part. Thanks, I got it now :)