Anecdotally, from my time on Windows Vista I remember an old-school tester who didn't write any code, just clicked on stuff. From what I could tell, in terms of

Anecdotally, from my time on Windows Vista I remember an old-school tester who didn't write any code, just clicked on stuff. From what I could tell, in terms of finding serious bugs he was probably more valuable than any of the SDETs who did write code. His ability to find UI bugs was just amazing (partly due to familiarizing himself with the feature specs, I think, and partly due to some mysterious natural ability).