Beinganoptimistisn’taboutknowingthatlifeusedtobeworse.It’saboutknowinghowlifecangetbetter.Andthat’swhatreallyfuelsouroptimism,”writeBillandMelindaGates.
1978年改革开放之后,市场机制逐步被引入到经济运行中uyt9