Martin Fowler's description of a 10 year old code base with 100K lines of code. He maintains the code is flexible and is still used for active feature development. I don't believe him, it can't be true. Nothing written 10 years ago could be in good shape. Impossible.
How Hard Could It Be?: Start-up Static
Joel took some hits over the Uncle-Bob-SOLID-gate issue. So here is a little love for the blogger from NYC. The short of it? Don't get demoralized. Good advice in this market.