Is There a Fourth Dimension?

If there was a fourth dimension, you wouldn't see it in our three dimensions, right? Ye, that's a great question. I mean, you would see it, but you would only see a slice of it, right? The fourth dimension, if it was a real part space and time, wouldn't be something hidden to us. It would just be that we couldn't see all of it. You now imagine being a two d being in a three d space. So things would look pretty weird if we were in a four dimensional space and we were three d beings.