Thus it seemed to Haeckel that such simple life could easily be produced from inanimate material.

Science is not a game in which arbitrary rules are used to decide what explanations are to be permitted.

Skin is made in large measure of a protein called collagen.

If you take away a rock from a pile of rocks you haven't changed much. It's still a heap of rocks - just a rock or two smaller. Take away a component from the mousetrap and it isn't a mousetrap any more.

Proteins are the machinery of living tissue that builds the structures and carries out the chemical reactions necessary for life.

The conclusion of design flows naturally from the data; we should not shrink from it; we should embrace it and build on it.

The first point one has to get straight in discussions like this, is that ID is not the opposite of evolution. Rather, it is the opposite of Darwinism, which says life evolved by an utterly unguided, undirected mechanism. If god directed the process of evolution, or rigged the universe to produce complex life, then that is not Darwinism - it is intelligent design.