c reativity n. [U] apprec the ability to produce new and original ideas and things; imagination and inventiveness 〖褒〗 创造力;创造性 e ssence n. [( of )] the central or most important quality of a thing [常与 of 连用]本质,实质 u ncreative a. not creative 缺乏创造性的 i magination n. [C] s th. that s b. imagines, not s th. that really exists or happens 想象;空想 u nconditioned a. not limited by any conditions 无条件的,无限制的 The speaker wants us human beings to think about why ______________.