资本资产定价模型(CAPM)是理解风险-回报权衡的有用工具,但它远非完美。
You never know with these things when you're trying something new what can happen. This is all experimental.
大国总是在寻找机会以牺牲对手为代价来获得权力,如果他们认为使用武力会带来战略优势,他们就会使用武力。