So: - you don't know whether the code is correct or not - code is being modified on regular basis... and logic is changed If someone knows enough about the c

So: - you don't know whether the code is correct or not - code is being modified on regular basis... and logic is changed If someone knows enough about the code to regularly change it, then they should be able to provide some documentation? How else are they able to modify a "correct" function and know that it's still correct? Can I guess that the code modifiers are quants, or something?