I'll be the odd one here.
I say time is NOT a dimension. It's just a measurement to an idea.
The idea is true and all.
Basically, if you go faster than light, then you travel in the past.
It all has to do with that cool stuff.
I'm in 10th grade. Give me credit you little 8th grader. (just kidding.)
And mainly.. Time is not physical. Where as the 3 that we live in are.
Which makes me not believe it's a dimension.