You must have missed that graph on about the 3rd or 4th page... it shows a nearly vertical line describing "transfer speed" for the file he downloaded.
Imagine if you're driving on a highway, and had a button you could push to make any other car on the road go arbitrarily fast. This guy found a way to request arbitrarily fast file transfers from arbitrary hosts on the internet. This is worse than a DDoS, but he also -invented- a method which makes it possible to track a DDoS route after 100 packets. Oh, this method is also backwards compatible with "dumb" internet routers, who do not need to be upgraded in order to pass this information along.
I thought it was really interesting reading, and don't pretend to understand all of how it's done, but hope for good things in the future from this guy, he seems to have it together.
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