"I didn't say all, I said most."

if you don't provide a counter example - it's almost the same as saying all

if you think most programmers are pizza box hermits, i think you need to spend some time with more of them. the stereotype has some basis in some parts of the country, but i think it's largely overblown

I'm not discounting the act of selling... it's just from my personal experience most business people aren't great at presenting or selling either - it's only a few (saying something is very different from doing - this relates to my view on ideas too), hence the need for proof (or your cash)