I Find The Idea Of Common Descent

In Darwin's Time All Of Biology Was A Black Box: Not Only The Cell, Or The Eye, Or Digestion, Or Immunity, But Every Biological Structure And Function Because, Ultimately, No One Could Explain How Biological Processes Occurred.

Skin Is Made In Large Measure Of A Protein Called Collagen.

In Order To Say That Some Function Is Understood, Every Relevant Step In The Process Must Be Elucidated.

Science Is Not A Game In Which Arbitrary Rules Are Used To Decide What Explanations Are To Be Permitted.

Despite Some Remaining Puzzles, There's No Reason To Doubt That Darwin Had This Point Right, That All Creatures On Earth Are Biological Relatives