Science is a tentative process

	Knowledge of uncertainty
	Science is a tentative process, an endeavor recognizing the ubiquity of error and of reducing–to the extent most effectual–and controlling errors.
	Risk of thought: Concepts in science –tested when possible by experimentation and in which results are confirmed by an appropriately necessary theory, if not a formula– proceed from stochastic reasoning to a means of discovery with care and ever more perceptive caution.
	Science of climate change	Tragedy of the commons
terrain and space	Isotopic ratio analysis A) heavy carbon too abundant B) produced by combustion	Schmidt Archer
Ecological literacy
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