Two-Thirds of the Average

Depth of strategic reasoning

The Concept

The Keynesian Beauty Contest measures how many levels of 'I think that you think...' you reason through.

The Science

Each level of reasoning ('k-level thinking') divides the rational guess by another 2/3. Few people reason past 2-3 levels.

You'll face 1 decision. There are no right answers shown in advance — choose as you genuinely would. Your responses build your Decision DNA.