This.

Usefulness depends on people, places, resources, time. Bucky Fuller taught the Spaceship Earth story, but once the space program got commonplace, nobody cared about our oxygen supplies and CO2 scrubbers as much if we were all going to be driving in comfort with cheap oil.

"This landing could get very interesting."

"Define 'interesting' "

"Oh god, Oh god! We're all going to die?"

-"Serenity"