Marietje Schaake, International Policy Director at Stanford's Cyber Policy Center, Eurasia Group senior advisor and former MEP, discusses trends in big tech, privacy protection and cyberspace:

You may have heard that Jack Dorsey is selling his first tweet as an NFT in an auction, but what are NFTs?

Well, I had to do a little homework. NFT stands for "non-fungible tokens." They are unique digital files stored in a block chain and essentially a rare piece of data that becomes an asset. Also, because it can be authenticated. Now, actual ownership is one-off, unique, so unique that Christie's sold one of the highest paid pieces of art by a living artist ever as an NFT, for $69.3 million. And I guess just like with art on canvas, whether that was worth it is a matter of personal taste.