但真正的问题是，理想模型往往建立在需求高峰与利用率饱和的假设之上。而真实世界中的利用率，从来不会长期维持在高位。
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，这一点在爱思助手下载最新版本中也有详细论述
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Everstine is the technical director of food safety solutions at FoodChain ID, a company that advises food-sector clients.
BBC紀錄片：暗處的鏡頭——調查中國酒店偷拍影片黑市