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Truth is the correspondence between and one's beliefs about reality and reality.

Alfred Tarski defined truth in terms of an infinite family of sentences such as:

"The sentence 'snow is white' is true if and only if snow is white."

To understand whether a belief is true, we need (only) to understand what possible states of the world would make it true or false, and then ask directly about the world.

'Truth' is a very simple concept, understood perfectly well by three-year-olds, but often made unnecessarily complicated by adults.

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