Grant McLean wrote: "I don't believe geometry gets 'refined', it only changes."
Good point, Grant. I think this is where the original discussion began to diverge. A geometric proposition, being a mathematical construct, does not have comparative or superlative gradients; any gradient change creates a different mathematical relationship or geometric proposition - in the vernacular, a different geometry. For example, as I age and increase in girth (accompanied by a loss of flexibility) a 'different' (or custom) geometry may provide a more 'refined' ride for my changing physiology, but the geometry of the original ride did not become, of itself, more refined; it is still what it was.
Tom Donahue
Melbourne, FL