You pick a random web dev forum, and I post there suggesting my business plan of low maintainence (for me), super cheap websites to get a start with freelancing or even disrupt it. People will say I shouldn't undercut market rates. And then I will say what the poster said, "I am a nice guy, and I try to help others on stack overflow, but if I want a nice career, I have to underbid. Sorry to everyone else."
You hold the stopwatch and see how long it takes for me to get flamed to hell and back. [the fact that pricing low doesn't really lead to a "nice career" is besides the point btw, you get the idea anyway]