5 Reasons Going To Mars is a TERRIBLE Idea | Answers With Joe

Radiation protection and G are assumed to be included. Even if the first few generations of habitats are a single hab spun opposite a counter-mass on a truss.
Design to spin the radiation shielding for 1G, and the incidental weight/mass of the actual habitat and anything inside it are almost insignificant additional mass.
Musk must know all this, I assume he's following media hype, all of which says "Mars is the next/only target". Same with why I'm still in the Mars Society, though their managers stubbornly use bad science to try to down-pay the importance of the O'Neill colony findings, and also follow the hype about Mars being the next logical step.
Once we get something large-going on, it must go towards asteroid mining for metals to pay for the whole thing, and then to O'Neill habitats. Then we can live at Mars or anywhere else.
Articles like this which are totally ignorant of the Space Colony studies aren't a help.