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"Whether it's improving our health or harnessing clean energy, protecting our security or succeeding in the global economy, our future depends on reaffirming America's role as the world's engine of scientific discovery and technological innovation." - President Barack Obama

See also: Office of Science and Technology Policy

The major subject areas in the sciences, distinguished by topical areas, funding sources, and to some extent research methods as well are:
•    Physical Sciences
•    Life Sciences
•    Social Sciences
•    Engineering and Applied Sciences
Science works by producing and testing theories that are provisionally accepted models or "useful fictions" that enable humans to predict how things in the real world will work. Science aims at the systematic elimination of error or falsehood, but can only offer the assurance that its currently standing theories "have yet to be disproved." Claims for science that promise more eventually provoke disappointment and cast the reliability of scientific findings into doubt.


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