4 Dimensions

A short post on a Friday afternoon.

To meet someone who lives somewhere else, I have to specify the place and time.

Like the Med building.

Along Grattan Street.

Corner of Elizabeth Street (or Royal Parade).

7th floor.

At 9am.

I would meet that person if my location along these 4 axes (3 space, 1 time) intersect. I wouldn't if I turn up at 9pm; well, maybe I would, but with a different person.

(Credits to Brian Greene, who illustrated this sort of example in The Elegant Universe.)

And something about time and about the Beijing 2008 Olympics.