There are three stages of maturity when it comes to getting things work and documenting how you did it.
1) I got it working, hurray! Run away before it breaks.
2) I got it working, hurray! And I took notes while I was getting it working, so I’m good. Run away before it breaks
3) I got it working, hurray! And I took notes while I was getting it working, so I’d better start from scratch and make sure my notes work.