I find it amusing that of all of the half-assed features in the standards, it's contracts that causes the vote to fail. I've seen firsthand how the standards committee just fundamentally disempowers anybody from actually objecting to a feature, and yet contracts is the one feature where all of those objections were heard at length, entertained repeatedly, and survived because the small coterie of a dozen or so people were unable to convince the other hundred people of their objections. The C++ committee process is deeply broken, and yet contracts is the one major feature where that process wasn't broken.