It shows a problem in thinking. "If at first you don't succeed, try, try again." is a good approach for solving some problems, like electronic power trains and

It shows a problem in thinking. "If at first you don't succeed, try, try again." is a good approach for solving some problems, like electronic power trains and unmanned rockets, but a bad one for others, like automatically closing trunks, self driving, and getting a manned mission to Mars.