The Market Ticker delves further.

I’m trying to figure out how much it costs for that extra three milliseconds, or the kind of computing equipment and software necessary to trade on it, but am having no luck. Needless to say, my hunch is there are probably only a half a dozen financial institutions in the world able to afford it. Just the image of a computer running the stock exchange hooked up to six other computers next to it trading on that three millisecond window while the rest of us plebes have to do it the old fashioned way, i.e. humanly, is sort of weird.

Question: is it still a market if no human interaction is involved?