> It's not quite that medicine is more complex, it's that Medicine is practical and accepts not understanding the details. If drug X works then that's enough we will use it even if we don't understand exactly why it works.

I'm always baffled by this. I can understand why we should move these drugs into practice. But, if the way you conduct research stops at X works - you should have a good look at the way you conduct research. I can completely understand short term gains but ignoring long term gains is very unscientific and immature.