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If something is concrete, it is physical. Concrete information is any matter or energy in the natural world that is in the process of being recognized and/or interpreted. When a person tastes a chocolate kiss, that kiss exists as a source of concrete information. Likewise, when a person watches a sunrise, hears glass shatter, smells fresh tulips, or feels raindrops on her skin; the leaves, glass, tulips, raindrops and the sensations they are involved in exist as sources of concrete information. Concrete information is also information that has been coded into matter or energy by humans as a physical representation of some idea. The headline printed on the front page of a newspaper, an existing copy of the software program pine on a computer's hard drive, and a love letter are examples of this kind of concrete information.
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