and then very precise definitions of those things. I understood the post in a very different way. There were no definitions, but lots of concrete examples. It

and then very precise definitions of those things. I understood the post in a very different way. There were no definitions, but lots of concrete examples. It is a staple of writing guidelines that one should be concrete rather than abstract, specific rather than general, etc. The reason for this is that it is easier for people to reason up to the general principle than down to the specifics. The concrete examples make it more understandable.