@mjg59 assuming that either you also publish the instructions you gave for that binary so I can see them, or that "make a thing which does exactly what Matt Garrett's thing does" is an instruction I can give the model and get back software which is a clone of yours, then yes. Having the source code isn't the point; being able to make the changes I want and nobody being able to stop me from doing so is the point. If I have a magic wand, I don't need source code.