Works
- A Psychological Tip, Grooks (MIT Press), 1966
In Thinking Tools
Known for
A Danish mathematician, inventor, designer, and poet who wrote thousands of short verses he called grooks, beginning in the newspaper Politiken in 1940 under the German occupation. A Psychological Tip advises tossing a coin when you cannot decide, because while it is in the air you find out which side you are hoping for.