" … no technical skill is worth more than knowing how to select exciting research projects. Regrettably, this vital ability is almost never taught. When I signed on with a research adviser in my first year of graduate school, I was thrilled to be given a problem to work in the physics of the upper atmosphere. That I had no idea what motivated the problem did not prevent me from carrying out an analysis, on a supercomputer of the day, and publishing my first paper at the age of 22… I found myself assimilating technical skills without ever grasping the significance of the problem, without understanding how or whether it was at the cutting edge of science. This way of working became a habit, one that seriously threatened my career… I relied on a senior scientist to tell me what would be an interesting problem to work on; then I would carry out the task… Four years and two postdoctoral positions after earning a PhD—still having little sense of what I wanted to learn as a scientist—I was on the job market. "

― , A PhD Is Not Enough: A Guide To Survival In Science