Bill Gates isn’t about to be contemplating his touchdown dance yet. You don’t get to devote your life to battling the world’s most intractable problems by declaring victory before a fight is over. But in a letter Gates released this morning, headlined, “These breakthroughs will make 2021 better than 2020,” it’s clear that the co-chair of the Bill and Melinda Gates Foundation is feeling pretty sanguine about the year ahead—particularly when it comes to COVID-19.