Education is the bridge between traditional practices and modern sustainability.
人为某样东西实际支付的成本至少是标价的两倍,因为买来后设置、学习、维护、修理,以及最后处置,也需要耗费精力、时间和钱。不是所有的实际成本都在价签上。实际成本是标价的2倍。
所以大国攻打小国,那是互相残害,大国的错误必然反过来使其本国受害。 
Products are the foundation of a company, without good products everything is just talk.