 I've never been asked that question in Brazil yet. It only comes up at every meeting. I'm really very interested in Ethereum. I've worked in Ethereum from the very beginning. I've watched closely the development. I've written smart contracts, and I continue to work in Ethereum. I think Ethereum is a fascinating technology. It shows how diverse the ecosystem of blockchains and cryptocurrencies can be. I think it's important to understand that it solves different problems from the problems that Bitcoin solves. I think it coexists. In fact, it works best in coexistence with Bitcoin. Bitcoin provides robust security as a reserve currency and trusted ledger with very, very strong immutability and unforgeability. Part of the reason it achieves that is by being simple in its construction, which means it can't do smart contracts. Ethereum is more complex in its construction, which means it can do smart contracts, but as a result it loses some of the robustness that Bitcoin has, which means they work very well together and can coexist very strongly together. I think we're going to see some very interesting things. Of course, Bitcoin is still an experiment. It's seven years old. Ethereum is even more of an experiment at one year old. We're going to see a lot of change over time as we try to learn what it means to build smart contracts on blockchains.