> QA has to some how think of all the inane ways that a user will actually try using the thing knowing that not all users are technically savvy at all.

The classical joke is: (this variant from Brenan Keller[0])

A QA engineer walks into a bar.

- Orders a beer.

- Orders 0 beers.

- Orders 99999999999 beers.

- Orders a lizard.

- Orders -1 beers.

- Orders a ueicbksjdhd.

First real customer walks in and asks where the bathroom is.

The bar bursts into flames, killing everyone.

[0] https://xcancel.com/brenankeller/status/1068615953989087232?...