| 01 | Evolution | 41.9 |
| 02 | Heliocentrism | 36.9 |
| 03 | Cause and effect | 30.0 |
| 04 | The scientific method | 29.1 |
| 05 | logic | 28.5 |
| 06 | Aristotelian logic | 26.2 |
| 07 | Atomic Theory | 25.0 |
| 08 | Germ Theory of Disease | 23.5 |
| 09 | Numbers and measurement | 23.1 |
| 10 | Empiricism | 22.0 |
| 11 | aeon.co | 19.2 |
| 12 | Evidence and empiricism | 18.7 |
| 13 | Language and symbols | 17.7 |
| 14 | The self and consciousness | 16.9 |
| 15 | time.com | 16.3 |
| 16 | Democracy | 16.2 |
| 17 | Space and geometry | 15.8 |
| 18 | Gravity | 15.6 |
| 19 | The Structure of Scientific Revolutions | 15.4 |
| 20 | foundations of rational thought | 15.0 |
| 21 | Systems and interdependence | 15.0 |
| 22 | syllogistic logic | 15.0 |
| 23 | Information | 14.7 |
| 24 | Uncertainty and probability | 14.4 |
| 25 | Energy and conservation | 14.2 |
| 26 | Freedom and rights | 14.0 |
| 27 | Incentives and tradeoffs | 13.8 |
| 28 | DNA | 13.5 |
| 29 | Universal Gravitation & Motion | 13.5 |
| 30 | The Big Bang Theory | 13.1 |