[Bear_Slayer]

Time is merely a construct of perception.

At a basic level time exists, otherwise everything would happen at once.

We use a time system based on the rotation of the earth and also its revolution around the sun to measure time, but never the less some thing that we call time exists. It's not simply a matter of perception.

[RightWhale]

otherwise everything would happen at once

It does.

[TheBrotherhood]

>At a basic level time exists, otherwise everything would happen at once.

And it does.

There exists only a constant present.