I'm inspired to revive this blog by today's crossword (.puz link) in The Chronicle of Higher Education.
We've all cowered under the Sword of Damocles or cut through complicated choices with Occam's Razor. But I, and probably you, have never been stuck with Morton's Fork nor lost a head to Hume's Guillotine.
Morton's Fork forms by contradictory arguments leading to the same conclusion. As a two-tined fork, it especially recalls Heller's Catch-22: If you ask for a mental health discharge, you must be sane because if you were insane, you'd claim to be sane.
Hume's Guillotine is a philosophical tool for severing what is from what ought to be, a gap Hume thought other writers should respect more. Amusingly, Hume has his own fork dividing the logic of ideas from the states of the real or actual.
I did not know.