Is there hard evidence of the ROI of unit testing?

Question

Unit testing sounds great to me, but I\'m not sure I should spend any time really learning it unless I can convince others that is has significant value. I have to convince

Answer 1

Here's a great and entertaining read of a guy changing his company from within. It's not limited to TDD. http://jamesshore.com/Change-Diary/ Note that he didn't persuade the "bean counters" for quite some time and did "guerilla tactics" instead.