Comment by retroafroman

Great read. I've seen it happen-my boss was asked to go back and help consult to a bank he used to work for (this was in 2008, the bank was failing and being bought) about some database archive features he implemented, IIRC. Also, in my current job, I'm currently at a customer site helping them figure out how the machine we sold them a year ago works. Engineering documentation is just as important as software documentation.