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A billion? So since before the big bang... (I agree with your statement otherwise.)
by foobarbecue 7y ago
A billion? So since before the big bang... (I agree with your statement otherwise.)
- hirundo 7y agoThere are traces of life greater than 3 billion years old. If there averaged 1 generation every 3 years we're into the billions. Smaller organisms tend to reproduce faster than larger ones, and our ancestors, all inclusive, have mostly been microscopic.
- foobarbecue 7y agoGood point. I was thinking humans, which was silly.
- ALittleLight 7y agoThe further back you go in the evolutionary chain the shorter generations tend to be. I doubt a billion generations of bacteria would carry us back to the big bang. I also take this idea, that predator detection predates humanity and goes deep into our ancestral roots, to be the commenter's point.
- foobarbecue 7y agoGood point. I was thinking humans, which was silly.
- colechristensen 7y agoOne billion hours is about 100,000 years and plenty of bacteria reproduce faster. There was also probably at least 500 million years of only single cellular life. 1 billion seems in the neighborhood of the number of generations or maybe even a few orders of magnitude too low.
- foobarbecue 7y agoGood point. I was thinking humans, which was silly.