Pradeep Mutalik

Puzzle Columnist

Abstractions blog

Why (Almost) Everyone Was Wrong

The results of this year’s presidential election made a mockery of analytical election forecast modelers.

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Solution: ‘Which Forecasts Are True?’

Aside from potential clues gleaned from a fluke result, it would take hundreds of U.S. presidential elections to definitely conclude that one election forecasting model is superior to another.

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How Can We Tell Which Forecasts Are True?

Presidential election forecasts are historically successful and appear to be highly precise. Yet they’re often contradictory. What would it take to trust them?

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Solution: ‘Time Through an LCD Display’

Insights about time’s arrow from a liquid crystal universe.

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Seeing Time Through a Liquid Crystal Display

What insights can an LCD display give us about time’s arrow?

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Solution: ‘A Drunkard’s Walk in Manhattan’

City blocks help illustrate why walking randomly tends to take you away from your starting point.

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A Drunkard’s Walk in Manhattan

Why is it that when you walk randomly, the more you walk, the farther you get from your starting point?

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Solution: ‘Puzzles Inspired by Ramanujan’

What can the mathematical genius Srinivasa Ramanujan teach us about number theory through mathematical structures involving infinity?

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Three Puzzles Inspired by Ramanujan

Insights from the mathematical genius Srinivasa Ramanujan give us a number of ways to explore the infinite.