Astrobiology's standard definition of life — a self-sustaining chemical system capable of Darwinian evolution — is wrong in every single one of its words.

Astrobiologist and theoretical physicist at Arizona State University

That’s one of these standard different definitions that a lot of people in my field like to use in astrobiology is life as a self-sustaining chemical system capable of Darwinian evolution, which I was once quoted as agreeing with, and I was really offended because I hate that definition. I think it’s terrible, and I think it’s terrible that people use it. I think every word in that definition is actually wrong as a descriptor of life.