The poll results show what I always assumed was true ... that 50% of GFYers are a little slow (or at least 50% of those who voted in this poll)
If there are 2 curtains and you have a choice at 1 of them, you have a
50% chance.
If you don't understand just re-state the question, but start with 10 boxes instead of 3. If the host removes 8 boxes, according to the logic of the post, you only have a 10% when there's 2 left? Hmmmm.