Observation - Observation is the ability to get inputs through our five senses.
Occam's Razor - Named for William of Occam (1285-1349) "Essentials must not be multiplied beyond necessity." Galambos said that translated into modern terminology and applied to physical science, it means: if you have two or more hypotheses which are competing with one another, choose the one with fewer unproven assertions.
Ownership - The total, permanent and moral control of property until voluntarily transferred by the owner, where possible. Note: ownership of primary property can not be transferred from its creator.