为什么人变老之后，会觉得时间过得更快？
根据美国神经科学家大卫-伊格尔曼（David Eagleman）的说法，这种现象实际上有一个非常直接的科学解释：当我们的大脑在处理新信息的时候，就会付出更多的努力，我们就会觉得时间更长；而随着年龄的增长，我们遇到不寻常的事情变得越来越少，每天都在重复自己熟悉的事情，大脑就不会付出什么努力，所以就容易产生“怎么一年这么快就过去了”的感觉。
所以，正如 Eagleman 在 BBC Ideas 的这部4分钟短片中所建议的那样，如果你想“活得更久”，可以不断尝试新鲜的事物。
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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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