How Facebook Figures Out Everyone You’ve Ever Met

Facebook does what it can to underplay how much data it gathers through contacts, and how widely it casts its net. “People You May Know suggestions may be based on contact information we receive from people and their friends,” Facebook spokesperson Matt Steinfeld wrote in an email. “Sometimes this means that a friend or someone you know might upload contact information—like an email address or phone number—that we associate with you. This and other signals from you help us to make sure that the people we su

Source: How Facebook Figures Out Everyone You’ve Ever Met

UX 101 for Virtual and Mixed Reality — Part 1: Physicality

As practical applications of virtual reality begin to replace flat screens, designers need to consider how to adapt the principles of UX to a 3D world. In the same way that the shift from print to digital prompted designers to develop new skills to work in a growing medium, designing for VR requires designers to consider new forms of input, physicality, working with different senses, and how to make UI work in three dimensions.

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年入上千亿,解密二手手机江湖的红与黑_36氪

在华强北,稍微有些规模的手机回收商,一年会到2-3亿的流水。在罗叔刚进入二手手机行业时,一天交易几百台。而现在很多大一点的商铺,一天就交易几十万台,量级是指数级的变化。而二手机市场铺位的面积,据他估计已经增长50倍,并且还会继续增长。

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