[Gates Foundation] DedicationWe're dedicating this year's letter to our dear friend and Bill's Microsoft co-founder, Paul Allen, who died of cancer last October. Paul was a brilliant man with a wide-ranging mind and a special talent for explaining complicated subjects in a simple way. He loved to share his passion for music, science, the arts, sports, philanthropy, and so much more. He supported homeless shelters, brain research, and arts education. He helped us see how much good innovation could do in the world. He deserved.