Dozen-ish person team, 3 year project so far, billion dollar revenue company (not a software company), >500k LOC, TDD since the beginning. Have been doing TDD f

Dozen-ish person team, 3 year project so far, billion dollar revenue company (not a software company), >500k LOC, TDD since the beginning. Have been doing TDD for 18 years or so. Still getting better at it.