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because we only move forward.

if it COULD be negative, then we would be able to go back in time.

but like i said we only get to move forward.

THE ABOVE IS BY PREVOUS USER

for all we know it can be negative we could be in the past and the present is our future.

about what the other guy said positive dimesion dodsen' mean going forward that would be velocity which is not a dimension

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13y ago

What else can I help you with?