@CometKeith I disliked the fact I worked with a set of monkeys, testing regrowth of damaged nerves using different drugs. The doc I was working with, wrote up a paper saying it worked, when it was a total failure. Three years of testing this one group of critters, the test set up was wrong, they were totally paralyzed and could still "feel". I hated it. The doc tossed out all of my data.
A lot of weird off hours to doing the testing, working alone, hours and hours of testing. I had to get out.
So tossed away my Masters and went to work in a job you only needed a high school diploma. That has changed now. But I knew how to learn.
Ultrasound was like breathing to me, totally natural, my eyes could see what a lot could not. I found out when I hired people, I went for painters, photographers, anybody that could "see" the detail needed in that gray screen.