Chapter 1
Observations of the Natural World
Sun rise in the East, and set in the West.
Observation
• Does not come from emotion or logic
• Comes from our interaction with the physical world outside ourselves, from our experience.
Reproducible Observations
• In science, the word observe means actually experiencing something for yourself.
• When everyone who repeats an observation experience the same thing, the observation is said
to be reproducible and becomes part of science.
• The demand for reproducible observation is a relentless enforcer of honesty.
Circumstances can be important
Consider the observation that the sun rises in the East and sets in the West every 24 hours. Someone