Orbiting fusion reactors (was: Mirrors versus diffuse reflection)

Well, despite this thread, I'm not a fusion advocate either. As I often
remember, 50 years ago fusion scientists were used to say that we would have
fusion reactors in fifty years - that is, now. However, nowadays fusion
scientists say that we will have to wait 50 more years...

I also think that space solar power is the immediate answer to the energy
problem plaguing Humanity. Fusion will be needed just decades or centuries
in the future, when the Outer Solar System is colonized.

use reflection)

> Hydrogen 1 fusion does not work, as Helium 2 will not form, rather
> Hydrogen 2 must form, as the Sun does it, so one is back with neutrons.
Why
> not just use the Sun for power, which has already passed its environmental
> impact study, and will be there fired up for another 5 billion or so
years?
> Our efforts on trying to learn how to do controlled fusion for electric
> power or rocket propulsion have been good sources of jobs for scientists
and
> engineers, but like missile defense, have cost ~ 100 billion $ with no
> success to show for it. Will another 100 billion change that?
> The Apollo project cost ~ 30 billion $. Which will be remembered?
Lets