It's worth glancing at this whole article in which the Times' Elizabeth Bumiller provides an account of Condi Rice's explanation of the apparent contradicition between Dick Cheney's claim that Clarke "wasn't in the loop" on pre-9/11 terrorism planning and Rice's claim that Clarke "was in every meeting that was held on terrorism."

In this case Cheney's story is matter and Rice's is anti-matter. So perhaps that explains why things have gotten kind of explosive over the last couple days.