A liberal "progressive" myth.
Last time I saw it, the list of space tech "spinoffs" was around 5 single-spaced pages
I am glad to hear it!
I can only name a few off the top of my head but, admittedly, I haven't investigated it either.
Even if there were no trade off, I still think it's important and, imho it stems from the mandate that God gave to us: "go forth, cover the whole earth and subdue it.."
We were just born to go and see what's on the other side of that hill.