Starships, of course, have few limitations with regard to design, the prime specification being simply that they not disintegrate during acceleration… - Jack McDevitt

But, come to think of it, there was no need to wait. Time travelers don’t have to wait for anybody.

I'm not optimistic," he said. "The issue clearly flies in the face of the First Amendment. People have a right to tell kids whatever they want about religion."
"Do they have a right to push human sacrifice?"
"Of course not, Mac. But this isn't human sacrifice. It's just a church school."
"I'm not sure the effect isn't similar.

If you're paying attention to your wardrobe, Rudy believed, your mind isn’t sufficiently occupied.