@Bluesky
I know you said you aren't focusing your comment at anyone in particular....but, as it's my thread I feel I must address your comment

I agree we need stepping stones...but, I am concerned with the ultimate goal of what we are trying to achieve, otherwise, we are building in the dark!
We must understand (or at least grasp the concept of) the physical concepts we are aiming for.
I definitely have a goal...yet my steps are incremental, and methodical. See, I have many resources and have built many things. They are however, small proofs of concepts and investigative tools...I haven't put all my collected materials together in some ultimate machine because I cannot afford such a pricey failure.
"Slow and steady wins the race"