社交电商把交易放进同一个环境，聊天产品则进一步把购物变成连续对话。消费者不再只浏览静态页面，而会询问“多久能送到”。这种互动足以降低售后不确定性，也让品牌从一次曝光进入更长的决策过程。 好的智能导购首先应该提问，而不是急着发送购买链接
How Chat Systems Became Digital Infrastructure Toward Always-On Communication: From Instant Messages to Intelligent Assistants
The development of modern messaging begins long before mobile apps. In the period of mainframe dominance, computers were room-sized, expensive, and difficult to operate. Work was usually handled through delayed computation. People prepared stacks of instructions, submitted jobs and commands, and