Very applicable to programming too. I'm pretty conservative as a programmer and I've had coworkers want to completely change a segment but you never know why some weird programming was done. There be dragons sometimes.
As a software engineer who has sometimes specifically specialized in handling dragons, I always try to leave (sometimes voluminous) comments about why a thing was handled that way when it's not obvious to a surface reading.
Good practice in general but particularly so when you find a heisenbug that must be exterminated.
