Round or square?

This is frequently asked interview puzzle

Why is it better to have round manhole covers than square ones?

Previous articleMeasuring the Great Pyramid
Next articleA cup of tea. Creative Puzzle
Sergey Markov is an expert in the psychology of creativity and the author of the projects “Creative Absolute,” “Genvive” and “Creative Vision.” From 2002 to 2006, he headed the Department of Psychology at Chernivtsi National University, and from 2006 to 2011, he held the same position at the University of Economics and Law (Kyiv). His research interests include: Psychology of Creativity. Enhancing Creativity Tecniques. Creative Problem Solving. Creative Management. Creative vision and sense creation. The Nature of Genius. Eastern Philosophy and Art.