system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why "size" and "size on disk" is different?

While looking at a size of folder on my PC, I see it very often.

Is it because of some overhead used by my SSD that takes more size than the files does themselves?

Thanks everyone. Got my answer!
gpt
Your teacher tells you to write a four-page essay. So you write three full pages plus two sentences on the last page. Your essay is four pages long! Well it's not really four pages, it's closer to three pages, but it takes four pages to contain those 3.04 pages worth of text.

The "size" of your essay is 3.04 pages. But the "size on paper" is 4 pages.

The significance of reporting that it is 4 pages long "on paper" is that you only have 100 sheets of writing paper. That means you can write only 96 more pages of text, not 96.96.