system
Given the following post, respond as if you're commenting on Reddit:
human
Are the smallest components of mass able to rotate?

I know that the velocities of the smallest particles can change their direction, but I don't know if these particles themselves are able to rotate.

My thought-process was this; when an object rotates, the object is made up of smaller components which are then sent moving in different directions. But the smallest particles we know of aren't made up of anything smaller, they are single entities.

Since they are only made up of one part, and cannot have different parts to be sent in different directions, it seems to be that they are unable to rotate.

So, are the smallest sub-atomic particles able to rotate? And if they are, does that mean they are made up of smaller particles that we have yet to understand?
gpt
We can't exactly look at them and check.  However, they *act like* they rotate.  They have an intrinsic angular momentum that behaves just as we expect, can couple to other angular momenta, and the whole sum is conserved, etc.