[brabel]

I believe studies have shown that people will routinely make bad decisions from the point-of-view of business, even when it's clear to them that that's the case, because of their other biases which are too powerful to resist, specially things like racism or similar forms of prejudice (e.g. someone who is from the same social level and geographical region as the boss gets promoted over a demonstrably better candidate who comes from a less favored region of the same country... sexism also seems to apply in many countries, including the USA).