[PeterPrinciple]

Tell me exactly what Darwin proposed. Not what you think he proposed. It isn’t what you think........................

[BroJoeK]

PeterPrinciple: "Tell me exactly what Darwin proposed.
Not what you think he proposed.
It isn’t what you think........................"

This link has a summary of "Darwinism".

Here is a summary of that summary:

"These are the basic tenets of evolution by natural selection as defined by Darwin:

1. More individuals are produced each generation than can survive.
2. Phenotypic variation exists among individuals and the variation is heritable.
3. Those individuals with heritable traits better suited to the environment will survive.
4. When reproductive isolation occurs new species will form."

I learned it as two confirmed observations (aka facts) operating together:

1. descent with modifications and
2. natural selection.