My guess is even your higher number of 100,000 is probably low. Not very scientific but I took a quick look at total membership (100 members/page x 115 pages) = 11,500. Thus, 100,000 would result in an average of 8.7 years engineering experience per member. Seems low to me but maybe I'm biased by my almost 48 years engineering experience (I was a child prodigy).
Thanks, mate - it is a bit demoralizing when you spend hours thinking something through, then pour your heart & soul into starting an amazingly deep and insightful thread, and it all dries up .
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"Love justice, you who rule the world" - Dante Alighieri
What CR4 needs to do is submit one question per week and the brain bank submits solutions. I wonder what would happen if industry monitored the answers.