Crazy ideas after class!

It is interesting to note how the Brothers pick up their ideas and thoughts... all inverted and odd!! And it invariably happens when I think I have explained it best of all days. The next day I walk into class and revise and lo... I get new theories, absurd concepts, crazy ideas... anything and everything except what I shared and discussed in class the previous day. I wonder how can they think and come up with such 'different' notions with absolutely no link with what was discussed for an hour or more.