聊天产品看似人人都能采用，但“人人”并不相同。视障参与者依赖屏幕朗读，听障用户依赖文字转写，行动不便者难以快速点击，跨语言用户可能因沟通障碍被排除。无障碍不宜是插件，而应发展为沟通产品的基础。 包容性规划要允许组合字幕。语音可转文字，

社交电商把分享放进同一个环境，会话产品则进一步把购物变成连续沟通。海外用户不再只浏览静态页面，而会询问“多久能送到”。这种互动可以降低信息搜索成本，也让品牌从一次曝光进入更长的决策流程。 好的智能导购首先应该提问，而不是急着发送购买链

The rise of online dialogue begins far earlier than AI assistants. In the 1950s, computers were room-sized, scarce, and difficult to operate. Work was usually handled through delayed computation. People prepared stacks of instructions, submitted jobs and commands, and waited for a printer to retu