@BillGates: I’m deeply saddened to hear of Tachi’s passing. I loved working with him and I learned a lot from him. His passion for saving lives and making the world a fairer place was inspiring, and he matched it with an incredible intellect. I will miss him. https://t.co/68O3ytcoo4

http://twitter.com/BillGates

I’m deeply saddened to hear of Tachi’s passing. I loved working with him and I learned a lot from him. His passion for saving lives and making the world a fairer place was inspiring, and he matched it with an incredible intellect. I will miss him. https://t.co/68O3ytcoo4

— Bill Gates (@BillGates) Aug 6, 2021