While Holland didn't say much about variety, he differs from Mayer in the natural state of the options.

"Junk food is gone," Holland envisages. "Things are more powdered, condensed and broken down here and added to stuff. I think we'll all be vegetarians...Something will happen to the animals, pets and animals are going to be such a rare thing."

"I hope we don't have the pills that rehydrate," Mayer says. "Eating is too much fun."

Oh, and by the way, the increased water flowing through campus will result in more bridges, but students won't necessarily get to class in the same way.

"Harvard researchers have developed a way to transport people without cars, traffic lights, and horns honking. Sort of 'Beam-me-up-Scotty technology,'" Power offers.

Holland has similar ideas.

"There will be moving sidewalks and tubes," he says. "I'm seeing tubes that take you from classroom to classroom. I'm not sure if it's for weather protection."

Holland is least clear about what students will do for fun in the future. But he foretells more recreation sports and has a vision for one new pastime involving a "ball or a disc...you shoot it out," he says. Asked to provide more details, he says only, "Some of type of science ball or something."