re: What other professions can you fail 1/3 of the time and get a $2 million raise?

Honestly, the more "important" your job becomes the less important it is to be 100% right rather than right more often than not. I use important loosely because all jobs are important, but I guess the better term would be the more powerful your job is.

CEOs, CIOs for large funds, presidents, ministers, etc. will always make mistakes, the key is making more right decisions than wrong decisions. Data entry and administrative type jobs more or less require 100% accuracy. The US President is going to "fail" no matter what in some people's eyes. Even if they are doing what's best for the country, people are going to think they are wrong. You know what a large fund manager gets when they get 100% of their investments right? An insider trading investigation.