The test of the value mean is performed after its result is reported – so the test will always report "TRUE".
I think the text means to say "Ran 10000 iterations" rather than "10k mutations" (though the two are equivalent at the given rate). I found the existing text confusing.
Than ks for spotting these. Thanks to other changes this was causing a conflict, so rather than merge and fix that I thought it was easier to just make the changes directly.
mean
is performed after its result is reported – so the test will always report "TRUE".