In many biological structures proteins are simply components of larger molecular machines.

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.

It is often said that science must avoid any conclusions which smack of the supernatural.

In many biological structures proteins are simply components of larger molecular machines.

As can be seen even by this limited number of examples proteins carry out amazingly diverse functions.

Irreducible complexity is a problem for Darwinian evolution. Whenever we see these complex functional systems we realise that they have to be designed.

A man from a primitive culture who sees an automobile might guess that it was powered by the wind or by an antelope hidden under the car, but when he opens up the hood and sees the engine he immediately realizes that it was designed.