Karl Popper
Was a philosopher
His contibution shaped the way scientists think
For s statement to be scientific, it must be falsifiable
Boldness of scientists
Making daring conjectures
Making bold predictions
3 theories
Kepler
Newton
Einstein
Most successful
1. Bold theory
2. Not the theories truth which decides its scientific character
3. Derived 3 important predictions of diff. observable facts
4. Predictions crucial
5. Declared his theory false