From here to infinity

We have probably all heard of feedback cycles, where a permissible operation can send a system into an unending sequence of cycles. Something rather like one haunts the philosophical literature on God. Its origin is the apparently unremarkable fact that every natural language contains a word or words equivalent to ‘Why?’ The fact may seem unremarkable, but combined with what looks like an equally unremarkable assumption it generates an explosive mixture. For if X is any meaningful contingent statement, the expression ‘Why (is it the case that) X?’ is a grammatically well-formed question, and given the plausible assumption that to any meaningful question there is in principle an answer, we have the loop: to any answer, say Z, you simply stick ‘Why’ in front of it and place ‘?’ after it, and off you go again. Forever, or so it seems.