How many times do I have to tell my co-workers that testing isn’t just about proving your shit works in nice ways. It’s also about proving it works with sparse or inadequate data. Also, regression testing is a thing so do it!

Yeah devs are often bad testers. However, it may help to hire testers, PAY them properly instead of treating them like shit slaves, AND pay them a bonus for every spec deviation (=confirmed bug report) they find.

All of that does wonders for the testers' creativity to find bugs. It's a management issue to set up the frame with the right incentives.

@irene open bug hunts are riskier but often less expensive than hiring testers