This time from Adam Kotsko, who is a professor at Shimer College, here. I don’t completely endorse this advice, but it well reflects the times we live in and I think Adam was quite crafty in his approach.
In the sciences, I don’t think there is remotely enough time to moonlight during grad school. Bench top experiments are somehow all consuming. Perhaps however this might be useful for students who are doing computer simulations only–although if you got your PhD in a computer sciences field, I can’t imagine you’d ever need to “hide” your over-education.