How is lennie a dynamic character in "of mice and men"?

He is considered a flat character He doesnt grow throughout the story. Lenni is devoted to george

He really doesn't have a big part in "Of Mice and Men". He is considered a flat character. such as Lennie, Crooks, Curley, and Slim tend to be those that grow very little (or not at all) throughout the story.

I’m just thinking something from the top of my head so it may not be much so if weathering didn’t exist, there wouldn’t be anything to break up earth’s crust naturally. so by assumptions, the rocks on earth would be larger than they actually are since there’s nothing to break them up into smaller parts.overall, i’m not really sure, but all i know is that it’ll mess up the rock cycle that we have now.hoped this .