What is the principle of “irreducible complexity”?
All the complexities of a biological system must exist together because the components are useless separate and must all be functional at once for the system to work at all. Examples of this include: flight, sight, sexuality and hearing. DNA is another example because you need the encoded information, a system to decode (read) the information, a system to write the information (reproduce it) and a system to utilize it all appearing at the exact same time because each of these systems alone or even all but one of them is utterly a waste (Psalm 94:9, Psalm 139:14, Proverbs 20:12).
