We have here now about 20 responses out of 20,000+ members. The thread on system engineering would take considerable work (but being in progress in part for the book anyhow). But, with only a 0.1 % response, this is similar to the disinterest shown on PN. I appreciate the enthusiasm of those who responded but I wonder about the viability of such a thread or sub forum.

I want to remind all, that in my own words elsewhere, you can throw a log across a stream to get to the other side, but that does not mean that you are an engineer. What I intend to offer is the difference between those two positions. Books like Wall and Baker offer no clue as to the science of photo systems. They were throwing logs back then.