He told his audience that by typing tracert followed by a website name (like Google), he was "hacking" into their servers to reveal secret connection points.
If you're actually interested in how the tool works without the "hacker" theatrics, experts on Hacker News and YouTube explain that it's a simple way to find where a network connection is failing.
The tracert (trace route) command is actually a basic diagnostic tool used by IT professionals to see the path data packets take across routers (hops) to reach a destination.
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