I tried to summarize my path after finishing my Ph.D. in Physics. What was in my mind, and the things that made me focus on a niche that was obviously under-served. I had no tools to think about markets, value, money, but I think I managed to learn quite a great deal in a short time, and wondered who else out there is following a similar path.

Isn't then the PhD itself partly a failure, in the sense of wasted energy/time to obtain the final Certificate, but not using it at all?