Because of this medical project the Ooga team has been working on, I’ve been introduced to some physicians who are at the top of that industry. I have been absolutely blown away by them. They are like astronauts. Focused, clear, physically talented, mentally agile, gracious. Sitting and talking with them you can FEEL this amazing depth of knowledge, ability and character. The rigors of that medical hierarchy must be like the astronaut program, where it both trains people and also weeds out those it can’t train, until all you’re left with is the diamonds.
Ooga Labs 
Then again, the rigors can be downright excessive, and break or at least bend formerly happy, smart, passionate people. I’ve seen it happen with my sister and it breaks my heart.
Astronauts have their place, but so do happy, smart, passionate people–who either get out of the sleep-deprivation, bureaucratic, overly long, monomaniac track as soon as they can, or don’t get into it in the first place.
I get the fascination with rigor and single-mindedness because I share it but my guess would be that it is largely self imposed when it succeeds–“the power of instruction is seldom of much efficacy except in those happy dispositions where it is almost superfluous.” In the end, you find equally extraordinary people at the top of all industries, the rigor physicians have to endure seems to me more of the anachronistic, medieval kind.