One huge development in the field of medicine that I'm very thankful for is anesthesia. I definitely would not want to live in the days when you went into surgery with just a shot of whiskey and something to bite down on.
Anesthesiology is actually a very tricky science, though. If you don't give someone enough, they won't be completely out. If you give them too much, well ... that's not good either.
That's one reason anesthesiologists are so highly trained (four years of training after medical school) and highly paid (the median income is $277,000). Unfortunately for them, their days could be numbered thanks to technology.
Johnson & Johnson is rolling out the Sedasys anesthesiology machine. It's in four U.S. hospitals already, and it looks like it could be a game changer.