不确定性是社会理性认知的产物，不确定性不仅取决于不确定性自身的客观概率，更取决于社会主体对不确定性的主观认知期望。个体的主观认知期望都建立在其社会生活连接上，现代社会中客观发生的物与物的连接、理性认知的人与物的连接、感性认知的人与人的连接都发生了巨大改变，这成为不确定性在社会生活中频繁出现和广泛传播的重要原因，城市作为社会生活与连接的主要场所遭遇的不确定性风险尤为突出。智慧城市建设，需要以不同连接场景下的“算法—软件—硬件”智慧体系，优化现代社会生活的连接机制，才可能增强社会应对不确定性的能力。

Uncertainty is the product of social rational cognition. Uncertainty depends not only on the objective probability of uncertainty itself, but also on the subjective cognitive expectation of social subjects. Individuals’ subjective cognitive expectations are based on their social life connections. Many connections that occur objectively in modern society have undergone tremendous changes. This has become an important reason for the frequent occurrence and wide spread of uncertainty in social life. As the main place of social life and connection, the uncertainty risk encountered by cities is particularly prominent. In order to build a smart city, it is necessary to optimize the connection mechanism of modern social life with the “algorithm-software hardware” smart system under different connection scenarios, so as to enhance the ability of society to cope with uncertainty.

social life, social connectivity, uncertainty, subjective expectations, smart city