"There are actually two separate issues. First is the question of
the above criteria are adequate to recognize life, or whether additional
criteria must be met. The second is what is the actual course taken in
the formation of life on earth."
I was not addressing the second; that is the more interesting question of
course. What I was stating is that those three criteria seem quite
adequate (to me) as a reasonable definition of life. I still hold that
position. But I'm interested in how others view it. If some criteria is
added, what would it be? And why?
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