What should I take away from Mark Zuckerberg's testimony on Capitol Hill?
Well, the clearest thing is that almost nobody there likes him. The only compliments he got were from Republicans comparing him to Trump, which Zuckerberg must have been slightly happy about, but maybe not. The other thing I think, I think Facebook is making a mistake having him out there so much, having him gives speeches about free speech. It sets him up as a target and puts him in situations like this where it didn't go very well.
Why has Facebook cryptocurrency "Libra" struggled while other cryptos have not?
Well, most other cryptocurrencies are basically investment schemes. Libra is an effort to change the entire currency of the world. Facebook wants you to buy stuff with Libra to send money to people with Libra. Most other cryptocurrencies, it's mostly a tool for investment or something else. So, the ambitions are much broader. Also, it's made by Facebook and as I just said, everybody in Washington hates Facebook. That's why.