Comment by MetaWhirledPeas

I know this wasn't really your topic, but you've stumbled upon a pet peeve of mine: Dedicated testers aren't primarily to blame for bugs, nor are they primarily to be credited for bug-free software. For one, everybody should test, not just dedicated testers. And two, buggy-ness is primarily a function of design and implementation. Testers can improve the product, but if the product is fundamentally buggy there's no amount of after-the-fact testing that will fix that.