Most variations of this unproved theory assert that all species evolved through a chain of intermediate forms from a common ancestor (see also theory of [[common descent]]). Since there is no proof of this, and no way to disprove it (see [[falsification]]), scientists must classify this theory as [[pseudoscience]]. | Most variations of this unproved theory assert that all species evolved through a chain of intermediate forms from a common ancestor (see also theory of [[common descent]]). Since there is no proof of this, and no way to disprove it (see [[falsification]]), scientists must classify this theory as [[pseudoscience]]. |