[quote]Theories are called such because there isn't enough evidence to actually prove it exists.[/quote] [quote][url=http://en.wikipedia.org/wiki/Scientific_theory]A scientific theory is a [u]well-substantiated[/u] explanation of some aspect of the natural world, based on a [u]body of knowledge[/u] that has been[u] repeatedly confirmed through observation and experimentation[/u].[/url][/quote] Please don't confuse "hypothesis" or "conjecture" with "theory."