Yahoo can, Google more, Coall better!
why?
2018-1-16 USPTO's US9870392 confirms the novelty, inventiveness, and practicality of Coall as an artificial intelligence technology. So Coall can develop a more accurate, logical and friendly information engine than google search engine. Coall has developed a prototype. Coall Black Swan has many products. It has a large market, short cycle, low risk and easy exit; it can be a unicorn.