Unemployment

Unemployment is one of the inherent failings (inefficiencies) of capitalism.  It's a way for the rich to lower the wages of the poor.  Norway and Sweden currently have the highest standards of living.  The USA needs to become more like them.  Norway and Sweden are socialist.

Isn't Spacex trying to do too many things at once?

Falcon 1e, ISS resupply, Falcon 9 heavy, recoverable Falcon 9, manned Dragon, plus ????
If you try to do too many things at once you end up being unable to do anything.
Evolving from a proven base like happened with Atlas V or Delta IV makes more sense to me.

Physics is hard

Physics is hard to do.  As a consequence physics is hard for students to learn   AND    it is hard for teachers to teach.  Society should be grateful that it's possible to do physics at all.

Why are there so many small businesses?

There is so little freedom and democracy in the work place and some people just can't stand working as slaves all day long.  They will do anything to gain some measure of control for themselves.

Faster than light signaling?

If neutrinos really can travel faster than light could we modulate them and send signals back in time?  Warn ourselves of dangers, etc?
(Note: various string theories contain tachyons)

Keep STS flying?

Armstrong, Cernan, et al want to bring back the shuttle.  George W. Bush and his congress and then Barack Obama and his congress did not think america could afford the cost of keeping the shuttle flying AND developing a new replacement.  What has changed? Is our economy better today?  Can we tax the rich to pay for it?

The shuttle is too dangerous to keep it flying any longer.  Obama extended its life several flights already.

SLS

A better SLS design would allow for launch of crew without solid rocket boosters (which is safer) and a cargo only configuration which can include SRBs to boost payload mass.