Over-optimistic time and cost estimates stem from both psychological and political biases: a reliance on intuition rather than data, and a problem that Mr Flyvbjerg and Mr Gardner call " strategic misrepresentation" .
过于乐观的时间和成本估计源于心理和政治偏见:依赖直觉而不是数据,以及 Flyvbjerg 先生和加德纳先生称之为“战略失陈述”的问题。