Medical software is now clawing its way out of lots of bad software written by people with good domain knowledge and too little programming and CS chops. Really, the point should be to make sure the larger culture knows what it doesn't know.
Imagine if many financial institutions didn't fully understand their debt instruments...that would be bad, right? (2008) Well, many companies don't understand their technical debt, act like it's some kind of magic, and tell themselves it doesn't matter.
Unfortunately, it does.