system
Given the following post, respond as if you're commenting on Reddit:
human
How does Google Fiber significantly increase download speed?

With only parts of Kansas city currently using google fiber, how can their speeds be as they are when so much of the world still uses slower mediums?  Wouldn't the information still be passing through an entire "network of slow" before it hits the google-fiber neighborhood and can speed up?
gpt
Google owns the backbone infrastructure for their fibre network. Generally broadband connections slow down at a much more local network, and in improving the connectivity at this level they improve end user speed.

Imagine a water pipe that has to supply a whole neighbourhood, and everyone trying to use that. Google effectively hugely increased the size of the water pipe to that area. Further up the chain, the pipes have been big for a while now.