In defense of Euclid (was: Einstein's dream)

[matsunosuperfan]

S4 is notably off-beat in a frustrating way; I appreciate the metric smoothness of much of the rest, so this really stood out for me

Ah, yes, thanks. I think the feminine endings in the middle are ok for a limerick(?), but not when none of the other stanzas do that.  I'll pencil in:

In the end, as you know, slow as light,
Other axioms proved to have bite.
Minkowski had time
For Einstein to climb
Because Riemann had stayed up all night.

Nice fix! "Of course" might serve even better than "as you know" though the latter is technically correct syllabics. A little breath there is nice, I think