The answer to the 1st question is nothing. Nothing would make them think that and that's obvious so the real question is "why do they think that?" because the

The answer to the 1st question is nothing. Nothing would make them think that and that's obvious so the real question is "why do they think that?" because the fact is there are a lot of great programmers that never got a degree. The answer to the 2nd questions is to find someone who can actually do it. If you need a real world example look at Apple Computer.