[_delirium]

If you're running someone else's code, imo that's not reproduction in the first place, just like re-running an experiment using the original experimenter's preparations and lab apparatus is not what's usually meant by "reproducing" an experiment. Too much undocumented stuff can creep in if you don't independently reproduce, with independent apparatus, preparations of samples, etc. (I don't think having someone's code is useless, and it can be especially useful for elaborating on the original experiment, but I would purposely avoid looking at it if I were aiming for an independent reproduction.)

[rntz]

You are always running someone else's code. It starts the moment you boot up your machine.

[jsprogrammer]

Not if you bootstrap from the silicon up.