To build on this, those parameters that are exposed require a ton of tuning, more tuning and retuning. As a game programmer, exposing those numbers to someone w

To build on this, those parameters that are exposed require a ton of tuning, more tuning and retuning. As a game programmer, exposing those numbers to someone who cares a lot about it and whose job it is to monkey with them frees them up to iterate without you in the loop. They get better results (because more iterations) and you are out of the loop so you can work on teh next thing. This is vital because, unlike accounting software, there is no "right answer" to arrive at. There used to be junior programmer positions for people to listen to artists and modify/rebuild the source with different magic numbers. That's a waste of everyone's time.