Comment by NooneAtAll3

I feel like there's a missed opportunity for "Wason 2–4–6"-style gotchas

I'd love to see functions that are "obvious" when all your tests have the same quality you never tested without

like f.e. testing with all characters distinct ("abcd" or "123456789") seems like an obvious strategy to see where each character goes - but function may be grouping same letters together and you'll never know