I'll take a stab at that, just because we have an R and D division.
I hope through these hearings you reach the appreciation that our business is a constantly evolving one. It is at the leading edge of technology, and quite often the bleeding edge of technology, where new techniques don't always work as we'd hoped they would.
In general, up to 10% of our capital investment in any year goes to applying existing technologies or new technologies in novel ways to enhance our ability to extract oil and maximize the recoveries we can get from various reservoirs. It isn't just a bunch of scientists in white lab coats; it's guys on drilling rigs running new tools underground and testing new ideas. That is the hardcore R and D that we do.