Can You Run Something On The Server That Only The Client Can See?

I don’t know if this is a dumb question, or a good question. But can you run something (or a script) on the server that only the client can see? Here’s an example:

If you had a part that only the client can see, and you have a script inside the part that runs on the server, will it work?

(Also, this might be in the wrong category, so if it is, oops.)

You can use remote events for server to client communication, though what’s the use case for this when you can use local scripts?