nonabelion

>I tend to say that FP is good at adding new operations to existing things, while OOP is good at adding new things to existing operations.

What you described is exactly the _expression problem_. And it has some solution.

See https://oleksandrmanzyuk.wordpress.com/2014/06/18/from-objec...

Wikipedia is correct. Radicals do carry a lot of semantic meanings. I think the most apparent examples are the names for chemical elements. For example, the radical 气 means gas. Hellium in Chinese is 氦，hydrogen is 氢. So look at the character you immediately know the natural state of the element. Moreover, even if you don't know a character, if you see it has the radical, you can guess what that is related.