#胡说八道
很多人在扯文科有用无用。昨晚我忽然想到一个关于有用的递归定义：
1 所有直接关系人类生存的物质都是有用的。
2 所有能促进有用物质生成的，都是有用的。
可以通过这个递归关系递归几次能到1，算一个「有用距离」。
BY Dante's Limbo
A project of our size needs at least a few hundred million dollars per year to keep going,” Mr. Durov wrote in his public channel on Telegram late last year. “While doing that, we will remain independent and stay true to our values, redefining how a tech company should operate.
With the help of the Search Filters option, users can now filter search results by type. They can do that by using the new tabs: Media, Links, Files and others. Searches can be done based on the particular time period like by typing in the date or even “Yesterday”. If users type in the name of a person, group, channel or bot, an extra filter will be applied to the searches.
telegram from jp