And the probability processes employed to always arrive at the same point? There's a reason the word fuzzy is used.

The probability algorithm has the same veil of wonder as its biological odds. Or the search for the meaning of life as its known.

My comparison was technical not flippant. In short our lack of understanding is based on too many not too few possibilities. Chaos theory (as tweaked over the years) at the quantum level results in probability theory at the observable physics level. The probability of amino acids getting their act together is almost irresistible.

The origins of the complex molecules do indeed include extraterrestrial sources. After all, if you must be so fundamental about it, despite the protestations of religious cranks, we are star dust (we are etc).