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scientists from the University of Chicago reported that young children who understand how shapes fit together are better able to use a number line and to solve computation problems.

"Ever tried. Ever failed. No matter. Try again. Fail again. Fail better."

When a program runs and produces a good result, it's perfect. It's awfully hard to define success the same way in the humanities. What we do, teaching or writing, can always be better. The program will never simply run.

Gamers have solved the structure of a retrovirus enzyme whose configuration had stumped scientists for more than a decade.