<span>General Idi Amin Dada: A Self Portrait
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Walking is the misplaced modifier. The correct sentence should be, "I found a twenty dollar bill while I was walking down the street."
Terence Tao is a supreme problem-solver whose spectacular work has had an impact across several mathematical areas. He combines sheer technical power, an other-worldly ingenuity for hitting upon new ideas, and a startlingly natural point of view that leaves other mathematicians wondering, " Why didn't anyone see that before?"