快猫短视频

DESPITE our attempts to define, measure and make life black and white, the world turns out to be unexpectedly vague (see 鈥淜ees van Deemter: The importance of being vague鈥�). It鈥檚 not just that things we think of as well-defined are actually a series of approximations, like the metre. More profoundly, vagueness is a key part of communication: unless we get to grips with it, robots will never 鈥渢alk鈥� naturally to people and the much-hyped semantic web won鈥檛 work at all. Just as well, then, that we have finally started to think precisely about vagueness.