Yes Elliot there are significant chunks of info missing, you are starting to help fill the holes by participating, that is exactly what I was hoping for, thanks.

You are also right in highlighting the need for some testing. Part of the practical info that I'm trying to get across is two fold, 1- we humans are the weak link in the system, problems are typically caused by our mistakes or lack of understanding and 2- the makers of our tools and materials have fully tested them.

What is untested is "us".

I disagree about your assertion that E.I. needs to be adjusted on the meter to deal with shadows though. Meters, all types of meters, simply provide reference points. This is what I was getting at with the notion that the meter has no clue about what it's seeing, we have to fill in the blanks and adjust accordingly.