Timeline for Most harmful heuristic?
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| May 29, 2015 at 13:34 | comment | added | Eric Wofsey | I think there is a version of this heuristic that is mostly accurate and useful: almost any "canonical" construction is functorial or a natural tranformation. As you point out, this isn't always the case (and the converse certainly isn't the case in general), but in my experience the exceptions that arise in practice are quite rare and it is not difficult to get an intuition for detecting the rare cases when it fails. A special case of this that is actually literally always correct is that any canonical construction is functorial/natural with respect to isomorphisms. | |
| S May 28, 2015 at 20:41 | history | answered | KotelKanim | CC BY-SA 3.0 | |
| S May 28, 2015 at 20:41 | history | made wiki | Post Made Community Wiki by KotelKanim |