Where else? > Slashdot. "time is not a single dimension of spacetime but rather a local geometric distinction in spacetime. While this may seem very esoteric, it is actually quite simple. Not too long ago, people thought the Earth was flat, which meant they thought that gravity pointed in the same direction everywhere. Today, we think of that as a silly idea, but at the same time, most people today (including most scientists) still think of spacetime as if it were a big box with 3 space dimensions and 1 time dimension. So, like gravity for a flat Earth, the single time dimension for the 'big box universe' points in one direction, from the Big-Bang into the future. A lot of lip service is given to the idea of "curved spacetime", but the simplistic 3+1 'box' remains the dominant concept of what cosmic spacetime is like." visit Alexander Franklin Mayer
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Read the comments in digg. Some funny retorts.
'I broke my wookie.'
by jawa
'There's a weird house in California where gravity does indeed point in different directions. Like, ropes hang sideways and stuff.'
by shiptoshore
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