h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

I'm generally fine with thieving when it doesn't involve me getting caught.

Is it OK for animals to steal? If so, why not humans?

"And with a functioning and generally fair judicial system self-defence (and euthanasia, but that's a whole new ball game of ethics) is the only necessary use needed"

But it seems to me that you're changing the whole nature of Z's question by taking a "functioning and generally fair" judicial system as a given. To remind you of the question:

"is it *ever* ok to steal? Are there any other laws that can be ignored on occasion?"

History is full of occasions where there's not a 'functional and generally fair judicial system', unfortunately. It is possibly even the rule, rather than the exception to it.

Perhaps I am altering the question, but I believed myself to be answering at least a part of it
Assuming a said system I believe my comments are correct
Not assuming such (or, to make life easier, assuming a non-just system)
things become more complicated - you could argue that "crimes" needed to bring in such a system, so long as they are the minimum necessary, are allowed - but that ignores say committing actions to protect yourselves and others which may not advance the cause at all
I think in many of these you;re running into a lesser evil case - it may not be right to steal something (not least, the stall owner might have done nothing wrong) but it can be better than allowing someone to starve

A full, and even a sound set of just my arguments and views would take up far to much space, but I'll hope to continue the debate with the above

I didn't think your answer was an incorrect answer, just that it wasn't an answer to the question Z asked. It was built on an assumption that wasn't present in the original question.