system
Given the following post, respond as if you're commenting on Reddit:
human
Why does segmented downloading cause such an immense improvement in download speed?
gpt
It's because it allows you to max out your bandwidth more easily.

Let's say you have an empty pool that you want to fill with water. Someone else has a tank full of water, but the tank has a flow restrictor, so it would take, say, 10 hours to move all the water into your pool, even though you have a powerful pump that could do it faster, if the restrictor could be removed.

Now imagine that there are 10 other people with tanks, and you can fill your pool from all of them simultaneously. You only need 1/10th of the water from each tank, so you can do it in one hour. On top of that, some of the tanks might have lesser restrictors, so your pump can get the water through faster, bringing the time down even further.