While ego-surfing, I found something I let slip by last April. Responding to my views on network neutrality, Richi Jennings pooh-poohed my claim that low latency is important. Specifically, he said:
Here’s the thing… Those of us that live the other side of the Atlantic live with 250ms latency every day, when we connect to services hosted in North America. I dare say the same is true for those on the other side of the Pacific. There’s not much getting around the speed of light.
Now, I’ll confess to not being the greatest of networking mavens, my networking startup and my various relationships with Network World notwithstanding. Truth be told, I dropped out of a physics major when the only uncompleted course was electronics lab. But before I dropped out, I did get the speed of light drilled into me. It’s 186,000 miles/second, aka 3 x 10^10 cm/sec. (“Not just a good idea; it’s the law!”). 186,000 miles, I’m quite convinced, is a lot more than 4 times the difference across the Atlantic Ocean. And the same remains true even when you knock off 50% or so because that light is traveling through glass rather than in a vacuum.