Saint Guinefort
Verified User
What sets apart the science of Bacon, Galileo, and Newton was testing, quantification, verification. Not observation.
Observation is as old as the hills. Aristotle and Anaximander were doing observation and reasoning about the natural world 2,000 years before Newton.
But there were no rapid and dramatic advances in scientific knowledge until scientific inquiry started to include testing, quantification, verification during the scientific revolution of the 16th and 17th centuries.
Let's say that was the mojo, the rocket fuel, the key ingredients, if you don't like the term meat and potatoes.
Arguably "testing", "verification", "quantification" are all different forms of observation.