如果用传统消费电子的逻辑看，iPhone 上的摄像头已经基本满足人们的拍照需求，但对于不需要搞摄影的 AI 硬件来说，摄像头的角色发生了质的转变——这是被动且持续接收信息的「输入」入口。
缺点：负区间可能“死亡”，即神经元永远不激活，这一点在51吃瓜中也有详细论述
3. What is an affiliate network and how do affiliate networks make money? Affiliate networks connect publishers to advertisers. Affiliate networks make money by charging fees to the merchants who advertise with them; these merchants are known as advertisers. The percentage of each sale that the advertiser pays is negotiated between the merchant and the affiliate network.，详情可参考夫子
A reference implementation for this alternative approach is available now and can be found at https://github.com/jasnell/new-streams.