Hi, I uploaded to youtube a video that compares how TDD behaves when using statically typed languages vs. dynamically typed languages (java and smalltalk :-) ). Sadly it is only in Spanish, but anyway, I wanted to share with you. http://www.youtube.com/watch?v=RLAZjiK4UHc (fist part) http://www.youtube.com/watch?v=wXW9WN9ay2E (second part) -- *Hernán Wilkinson Agile Software Development, Teaching & Coaching Mobile: +54 - 911 - 4470 - 7207 email: hernan.wilkinson@10Pines.com site: http://www.10Pines.com <http://www.10pines.com/>*