 notice i didn't say it makes it impossible to go to of the planet i think it's a problem that needs to be solved humans are adaptive and tool makers we can solve it we just have to think about it and work it out and do it and that the the best hope i have is that with multiple space stations being built they're going to be multiple customers for the space stations doing all kinds of experiment and manufacturing it's going to be addressed in the next decade i think without question