My Problem with Pushdown Automata and Turing Machines

I have beef with PDAs (pushdown automata) and TMs (Turing Machines). Do you think we should fix the problems with them? Discuss below.

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▶ABOUT ME◀ I am a professor of Computer Science, and am passionate about it. I have taught many courses at several different universities, including several sections of undergraduate and graduate theory-level classes.

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