To quote in parts:
"I think that 40 years from now, traveling around in near-Earth
orbit and to nearby planets will be a lot like air travel is
today," said Gary Lyles, manager of the Advanced Space
Transportation Program at Marshall.
"People will not think it's very unusual to hop on a spaceliner
and go to a job on Mars or maybe even a month-long asteroid
"It is understandably difficult for organizations to distinguish
between the crazy ideas that will one day evolve into breakthroughs
and the genuinely crazy ideas," Millis said. "Every breakthrough
looks good in retrospect but, at the time it was proposed, was
usually considered a crazy idea."