P3D re: not a rule at all

[Tom Deering <tmd@xxxxxxxxxxx>]

First Mr. Themelis said:
>The right numbers" exist only in your imagination
>Tom.  There are no right or wrong numbers."
 
Then makes this retraction:

>Let me clarify this...

>My advice is to understand the physical principles involved here,
>derive some of these formulas for yourself, experiment & develop
>an intuition which, at the end, will be more valuable than any
>calculator.

So, it turns out there are right numbers, they don't just exist in my 
imagination after all.  Well, thank you, George.  It takes a big man 
to admit a mistake.

But wait, then George invites you to use the geometric formulas, 
foregoing the 1/30 "rule"?  You mean, exactly as I suggested?   This 
is really to much.

What did you disagree with in the first place, George?
 
Tom Deering

PS: And where are those formulas that George recommends?  One place 
is http://www.deering.org