#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
The seemingly negative pandemic effects and resource/product shortages are encouraging and allowing organizations to innovate and change.The news of cash-rich organizations getting ready for the post-Covid growth economy is a sign of more than capital spending plans. Cash provides a cushion for risk-taking and a tool for growth.
Bitcoin mining is the process of adding new transactions to the Bitcoin blockchain. It’s a tough job. People who choose to mine Bitcoin use a process called proof of work, deploying computers in a race to solve mathematical puzzles that verify transactions.To entice miners to keep racing to solve the puzzles and support the overall system, the Bitcoin code rewards miners with new Bitcoins. “This is how new coins are created” and new transactions are added to the blockchain, says Okoro.
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