Sure. And are the technologies developing quickly? I'm not an engineer, and I'm certainly not an expert on the oil sands, but one gets the sense that the oil sands technology has been around for a long time. It is not that the technology is simple, but it's not developing that quickly. Basically, the same technology is being used, maybe with some small advances. What's really making the difference is that the price of oil is going up. That is what is spurring development. It's not so much the improvement of technology to bring the price down or to mitigate the environmental effects.
We were talking before about 1915, I think. That's a hundred years ago, almost. Has the technology really developed much since 1967?