hot and not-hot

when you have children, you truly learn (or should i say relearn) something new everyday. over the weekend i was helping wyatt with his heat transfer science homework. he is studying the effects of the earth's core heat on plate tectonics...words such as convection, radiation, and conduction were ones that i heard in my college level geology class at uf. however, i do not remember learning the concept that there is no cold...only the absence of heat (and if i learned this seemingly basic concept, it never was presented to me in a memorable way as i apparently have forgotten it). so my new sink faucet, pictured here and soon to be in our kitchen, should read "hot" and "not-hot" instead of "hot" and "cold." can't wait to see how the next lesson impacts our home. maybe there is a continuum of housework i am unfamiliar with...like my house often is "the absence of clean" and laundry "lacking completed particles."