It's time for another Explainathon, the biannual tradition when we put Kai and Molly to the test: In 30 minutes, they'll try to answer as many of your questions as possible. It's going to be tough, because this might just be our widest-ranging 'thon yet: Gamers! Trade wars! Gas prices! Bots on the trading floor! Plus, Kai and Molly will try to stump each other.