Seeking thoughts on a crazy/futuristic idea
russell: They have been used to a limited extent at least as far back as the apple Newton.  In a sense drag and drop is gesture based.  Sign language is gesture based. I dont think gestures will find much use in programming because of the lack of precision and limited vocabulary.  I thought for a long time that voice would be used for programming, but I havent seen a single example beyond simple commands.  Even that didnt catch on.  I wouldnt bet my YC on it.