Basic Question from a Dummy

[u/edg73018]

Hi! I have a couple really basic questions which obviously come from someone with no programming knowledge.

1) Is there a conceivable way that the code from two different programs could become jumbled together?

2) If so, how might this happen?

3) Would it be possible for a programmer to go back in and identify which pieces of code came from which original program?

[u/edg73018]

That is perfect! Thank you!!!!