> you could use the swarm to focus sunlight on a certain part of the Earth Whenever I see a proposal like this (e.g. orbiting solar power stations beaming micr

> you could use the swarm to focus sunlight on a certain part of the Earth Whenever I see a proposal like this (e.g. orbiting solar power stations beaming microwaves down to terrestrial receivers) I think "super-weapon." I can't see why country A would ever allow disliked country B to implement such a scheme.