You step over the threshold of your parents' home, and you're instantly transported back to your childhood. It's like time travel. You revert at once to a place of arrested development.

If you stop being scared, that's when entropy sets in, and you may as well go home.

Travel surveys show that parents want to spend more time with their children, and, believe it or not, kids say they want to do things with their parents. This gives them something to do together.

Are you saying that we can affect what happened in the past? That we can change it?

When a place gets crowded enough to require ID's, social collapse is not far away. It is time to go elsewhere. The best thing about space travel is that it made it possible to go elsewhere.

Time travel is such a magic concept.