To be honest about it, I think most of that cost that I've just mentioned is probably required regardless. You need to do those kinds of studies. You need to do the work ahead of time.
A big thing though is, if you take four years instead of let's say, two years—I'm talking about a large project—then you're probably incurring $30 million extra that you wouldn't have had to have in terms of process costs, plus you're accumulating a lot of interest. Plus, when you're dealing in a market where you have to have things done quickly, the markets can't accommodate super long timeframes, and you will go away to something of a shorter timeframe like coal generation.