Bob, 

Although I would be hard pressed to disagree 
with any of the points you raised, there is 
one that I would be extremely careful to use 
or recommend personally - Paschen's Law. 

Due to a number of parameters to include 
the geometry of test probes used, dielectric 
breakdown of an air gap can be extremely 
variable. Further, the electric field strength 
is different for two test probe tips 
(point charges) than for two parallel traces
(line charges). 

I have never seen experimental verification 
or comparison of air gap limits between two 
parallel line charges and two point charges.

Doug McKean

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