Interesting - in the embedded software world we have the exact same problem with hardware. Mocking the hardware can confirm the internal consistency of your ide

Interesting - in the embedded software world we have the exact same problem with hardware. Mocking the hardware can confirm the internal consistency of your ideas about how it works, but most problems stem from your ideas being inconsistent with how it actually works. Until now I always assumed that the environment from which TDD emerged (presumably database-driven "Enterprise" apps) was different in a way that made it seem like a better idea than it does to me, but your comment is causing me to seriously rethink that assumption.