As long as you don’t test it you are in a quantum state, the same as for the Schrödinger’s cat. Your code is either buggy or is not.
Hence, bugs are in fact triggered by users.
I tried to solve some of the last Advent of Code enigmas with LispE, and I discovered a plethora of problems, which I didn’t think would erupt after so many years of tests.
I can say this program will never return anything except 4 without running it: (* 2 2)