#播客
虽然从来没打过网球，也没看过完整的网球比赛，但是我觉得网球这项运动区别于其它运动最特别的一点是：一旦运动员上场比赛，中间就不能再获得教练的帮助，要自己独自面对场上发生的一切情况。所以李娜的自传书名是《独自上场》。
实际上，不止于网球，很多事情上我们都是“孤独”的，需要随时做好“独自上场”的准备。“独自上场”，才是生活的常态。
前几年听过张潇雨的播客《网球（上）——孤独和它所创造的》，专门介绍网球这项运动，这次奥运会想起来这期节目，只可惜好像这期节目没有下半段了。
这期播客里提到的《The Inner Game of Tennis》（中文《身心合一的奇迹力量》），多抓鱼上一直买不到。
BY codedump的电报频道
Since the violent storming of Capitol Hill and subsequent ban of former U.S. President Donald Trump from Facebook and Twitter, the removal of Parler from Amazon’s servers, and the de-platforming of incendiary right-wing content, messaging services Telegram and Signal have seen a deluge of new users. In January alone, Telegram reported 90 million new accounts. Its founder, Pavel Durov, described this as “the largest digital migration in human history.” Signal reportedly doubled its user base to 40 million people and became the most downloaded app in 70 countries. The two services rely on encryption to protect the privacy of user communication, which has made them popular with protesters seeking to conceal their identities against repressive governments in places like Belarus, Hong Kong, and Iran. But the same encryption technology has also made them a favored communication tool for criminals and terrorist groups, including al Qaeda and the Islamic State.
Bitcoin is a decentralized digital currency that you can buy, sell and exchange directly, without an intermediary like a bank. Bitcoin’s creator, Satoshi Nakamoto, originally described the need for “an electronic payment system based on cryptographic proof instead of trust.” Each and every Bitcoin transaction that’s ever been made exists on a public ledger accessible to everyone, making transactions hard to reverse and difficult to fake. That’s by design: Core to their decentralized nature, Bitcoins aren’t backed by the government or any issuing institution, and there’s nothing to guarantee their value besides the proof baked in the heart of the system. “The reason why it’s worth money is simply because we, as people, decided it has value—same as gold,” says Anton Mozgovoy, co-founder & CEO of digital financial service company Holyheld.
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