And, of course, there's a trade-off issue: security. The line between "orbiting solar power satellite" and "orbital death ray" is a fuzzy one (albeit not as fuzzy as some people would think, but still...)

You see people getting up in arms at the idea that WiFi signals might somehow be causing them to develop tumors. You think people are going to be more rational when told that someone is pointing a giant microwave at their heads?

Some people will only believe what they want to believe.

10km receiver...i think the first one should be built in Scotland.