Geologic map

This is particularly important in concepts that involve past events, which cannot be tested. Take, for example, the Big Bang Theory or the Theory of Biological Evolution as it pertains to the past; both are theories that explain all of the facts so far gathered from the past, but cannot be verified as absolute truth, since we cannot go back to test them. More and more data will be gathered on each to either support or disprove them. The key force for change in a theory is, of course, the…