Here's a brainbender for you. Can you define what is time? It's not quite as cut and dry as the question might seem on the surface.

Because, at least according to one of the smartest people who ever lived,

the concept of time changes based on a number of circumstances.

None other than Albert Einstein once posited that there is no absolute time.

Einstein theorized that time changes with the motion of a particular observer.

We tend to treat time as a linear concept with one event leading to another.

But in Einstein's theory, the past, present, and future need

have no fixed status. And that, in theory, they can be perceived in varying order.

I know, Trippy, right?

Einstein's special theory of relativity draws no conclusions about seeing the future.

In fact, Einstein didn't seem very interested in the concept.

But if Einstein was right, and being Einstein, odds are he was,

then the idea that we can see the future might not be so crazy after all.

But if seeing the future is at all possible,

then this calls into question the nature of time itself.

Because if the future can be seen, then it must already exist.

This of course then brings into question bigger philosophical questions of predestination

and free will.

One evening in Paris in 1788, the Prince de Beauvaux held a dinner party for members of high society.

It was a swanky gala, and to get on the guest list you had to be someone pretty special.

The prince was considered to be a scholarly man with a wry sense of humor, and he insisted that

he surround himself only with like-minded people who were able to match wits with him.

...