[adrianratnapala]

It sounds like this guys employer has taken first step to inventing QA.

There's whole classes of highly paid engineers whose job is to do this. But they work for old fashioned, boring, companies.

[bluGill]

The problem is QA tends to get to scripted. You need to exercise each corner of the product, thus you test A, B, C in that order - so you never find cases where testing C, A, B breaks, or any other permutation. (to be fair with any complexity it is impossible to test all permutations)

[adrianratnapala]

That's one part of it.

Another part is hiring a breed of test engineers who like breaking stuff and have a knack for it.

[ebiester]

We call it exploratory testing.