I'm surprised that he includes the key travel time. If a keyboard maker claims low latency, I assume they mean from the point when the switch actuates, not when the keypress starts. It seems like he is mostly measuring travel distance and actuation point position, which are things you can find out without a high speed camera.

I have one of those, and I learned about this when I created a github.io site. It worked fine on Chrome in Windows, but Firefox read the SSL cert as invalid. It took me a while to figure out that it was the URL that was invalid.

There are, my friend was one. They did very big events that appeared very serious in my city. If nobody taught you about MLM, and you don't have any knowledge about cryptocurrency but you definitely don't want to miss out on the next Bitcoin, I can see how you would fall for it.