Comment by nomel

3 hours ago

Yes, as they explain shortly after, in the next section "shedding weight".

They're not actually confused here. It's a writing style, where you pose an interesting problem/scenario, then explain it.

I don’t think they are confused either just don’t think it’s a good way to introduce the point.

When good expositors choose motivating questions, say like 3 blue 1 brown, they don’t usually make apples to oranges comparisons. The best examples motivate while making sense before and after you learn.

  • Sorry, but it's only apple to oranges if you already know the answer. That answer, explained in the next section, is very clearly intended for someone who didn't already know it:

    > This concept of throwing away bits you don't need to save space is called lossy compression. H.264 is a lossy codec - it throws away less important bits and only keeps the important bits.

    > PNG is a lossless codec. It means that nothing is thrown away. Bit for bit, the original source image can be recovered from a PNG encoded image.