Observations Plus Recipes It has been said that science is the orderly collection of facts about the natural world. Scientists, however, are wary of using the word 'fact. ' 'Fact' has the feeling of absoluteness and universality, whereas scientific observations are neither ab- lute nor universal. For example, 'children have 20 deciduous baby] teeth' is an observation about the real world, but scientists would not call it a fact. Some children have fewer deciduous teeth, and some have more. Even those children who have exactly 20 deciduous teeth use the full set during only a part of their...