I never expected a study. The neat 100x value, the lack of context, it sounds more a saying from grandma, which is wise, but not to take at face value. Someti

I never expected a study. The neat 100x value, the lack of context, it sounds more a saying from grandma, which is wise, but not to take at face value. Sometimes (rarely) it is actually cheaper to fix in production, sometimes, it is way more than 100x. I had a coworker who worked with IC cards and fixing a bug in production meant scrapping a whole batch of cards (can be millions).