There are domains in which expertise is not possible. Stock picking is a good example. And in long-term political strategic forecasting, it's been shown that experts are just not better than a dice-throwing monkey. ↗
It was hard enough to drive those heavy old cars back then under normal circumstances, but with a crazed monkey clawing you at the same time, it becomes nearly impossible! ↗
It is not so important to be serious as it is to be serious about the important things. The monkey wears an expression of seriousness which would do credit to any college student, but the monkey is serious because he itches. ↗