What's the Difference Between Copyright and Expression of an Idea?

There's the whole thing about idea versus the expression of an idea. And you're going o get familiar with this jewelled b pendant. The first person who made the bejewelled b said, no, i'm sueing you for a copyright that's mine. But because you can't copyright the idea, this is free to copy,. hence, e s ave copyright is such a weak, a weak copyright. It's very, very strange and basic. If we id apply to this case, yey, this this idea that, ok? So the the idea itself is not copyright. A that there you could have the reasonable expectation that different people would want to create a