The speech we hear is an indication of that which we don't hear. It is a necessary avoidance, a violent, sly, anguished or mocking smokescreen which keeps the other in its place.

好的产品经理应该像用户一样思考，像CEO一样行动。

有效性幻觉是一种认知错觉，指人在分析一组数据时高估了自己准确解释和预测结果的能力。