A professor in college told me once that numbers and time as we know it are wrong. True? False? And Why?

Depends on the professor.

The fact is most economists want numbers that give the answer they want at all times, within the time frames they want. Also, since time is based on 60, and the numbers are usually based on 10, these have to be wrong, since either time must become decimalised or numbers must start to have base 60 to make things correct.

Was this a professor of math or science?

The faster you travel through space, the slower you travel in time. While we're all on earth, travelling at roughly the same speed as compared to the speed of light, we can all use a common time frame and not have anything affected. I would say time is not necessarily wrong, but is an approximation.

As for number being wrong, that's harder to understand since numbers are an artificial construct that is self-consistent. How numbers are applied to "reality" might be wrong.

Humans don't fully understand time. We think we're hot **** just cause we can build a few shopping malls, but we don't know **** from clay when it comes to time. Time is slower in space. People who come back from space actually come back younger than the people who stayed on earth, albeit the difference is very small, but it's there. Why? We don't know. Humans don't know ****.

Numbers are fine--I don't have any idea what he could be referring to.

To fully understand spacetime is difficult. I don't know enough to explain it, but it's not simple Euclidean geometry and a Timex.