Further requirements could be listed, including some even more horrific than cloning.
A humble glass of water out of the kitchen faucet — nothing special there, right?
In the situation he describes, it would be a very complacent and foolish detective who took the circumstances as simply natural and failed to ask how they got to be that way.
“We can detect more than a thousand problems that had to be solved in advance for life to be able to develop on Earth,” says chemist Marcos Eberlin.
To evolve a protein, Douglas Axe draws a comparison to seeking out — blindfolded! — a particular atom secreted away somewhere in the Milky Way.