The Logic (or Lack of) in D&D

[Philotomy Jurament]

Of course, I'm not convinced the Fly spell involves 'holding your limbs motionless'.

Let's say you have a decent Strength score. If you're holding a suit of chain mail, you Fly at 60. If you're wearing a suit of chain mail, you fly at 40.

The implication, to me, is that the Fly spell is a physical activity that requires unrestricted body motion, because wearing armor slows you down, but carrying armor (as long as it doesn't put you over your Light load limit) doesn't.

Very interesting! I didn't know that about the 3.5 Fly spell. (When I played 3E, it was 3.0, and Fly worked a little differently; now, I'm playing C&C, and that factor isn't present in its Fly spell, either.) The 3.5 spell description does seem to imply full body motion; I don't particularly care for that, and would change it IMC.