Often you can still find out what it does, but the “why” gets lost and because of that people are afraid to change it.
I feel like this is what gets lost whenever documentation is talked about. Yes, you should probably be able to work out what something does by looking carefully at it - but why can be so easily lost!
I feel like this is what gets lost whenever documentation is talked about. Yes, you should probably be able to work out what something does by looking carefully at it - but why can be so easily lost!