Nice, sounds like a blueprint designed by a lens manufacturer..
Ha, cartoons like that are just for wimps.
Hello Paul,
This is to say: Both as a photographer and a systems engineer I like the post.
Hence thank you.
I'd call this a rationalization diagram. It really maps out the thought process for any human desire.
I will show this flow chart to my wife, the next time I want some camera gear. I am afraid she will point out there are three unmapped alternative paths at the lower right "So they want you to be happy". 1) "No", 2) "It depends" and 3) "Are you sure you want this question answered".