Well, I was assuming that you were participating in the conversation, rather than just seizing upon a sentence and nitpicking.
The conversation was about the role of the free market in health care.
User curt said that the only way to solve health care pricing was through the free market via individual choices. Mikeash said that would only work if we were happy to let people die of treatable diseases. Anonymoushn said that was a distraction, that the market would be fine if people could know prices up front. Grey-area said that predicting costs was basically impossible, so the market-based solution was unworkable.
You jumped in to say that prices were predictable through this new thing we hadn't heard of called "estimation", saying that this solved the problem. The problem, presumably, being how price opacity and unpredictability make a hash of individual-choice market mechanisms.
So I have no idea what you were trying to do, but as far as I can tell, it was either a) pushing people back toward an unworkable market-based solution for health care, thus preventing them from moving toward a solution that doesn't fit with the fundamentalist liberarian ethos so popular on HN, or b) you're doing this: http://xkcd.com/793/.
Given that you ignored the meat of my point twice in a row with nitpicky comments, as well as doing the same to the previous poster, I'm figuring b.