alt Hacker NewsShorter description isn't understanding, let alone of it is lossy.
When you shorten a description in a lossy way, you are deciding a priori that some differences in the object don't matter, and it's not because you understand the object, but because it serves your goal of shortening the description.
Or you actually do understand it.
You can't just assume smaller is better but it often is. And very often it's more information-dense.