On 11/4/2013 7:50 AM, Shmuel (Seymour J.) Metz wrote: > In <email@example.com>, on 10/24/2013 > at 10:49 AM, firstname.lastname@example.org (Richard Tobin) said: > >> In article >> <0.50d8b4d000a73620c6cc.20131022013536BST.email@example.com>, >> Ben Bacarisse <firstname.lastname@example.org> wrote: > >>>> - what's yellow and neither true nor false? >>>> - what's non-orientable and lives in the sea? > >>> I hope you will follow up after a suitable head-scratching period (I'm >>> stumped). > >> They are indeed Xorn's Lemon and Moebius Dick. > > WTF? Zorn's Lemma is certainly true in ZFC; shouldn't the answer be > something that is formally undecidable? >
Yes. One would think so. For Zorn's lemma the question should be something more like
what is sometimes everywhere yellow and sometimes not?