“Life started exactly once!” Well… For sure at least once. Could have happened multiple times since then too. Convergent evolution is also a thing, and perhaps some modern life forms can trace their origins back to a different starting point, but happen to have followed a similar enough path that it’s hard to say for sure. We know positively it happened once, but cannot conclusively say it has never happened again.
Yeah, good point. For anyone wondering, it’s unlikely to happen again though, because due to competitive pressures any new proto-life would just be called “food”.
“Life started exactly once!” Well… For sure at least once. Could have happened multiple times since then too. Convergent evolution is also a thing, and perhaps some modern life forms can trace their origins back to a different starting point, but happen to have followed a similar enough path that it’s hard to say for sure. We know positively it happened once, but cannot conclusively say it has never happened again.
Yeah, good point. For anyone wondering, it’s unlikely to happen again though, because due to competitive pressures any new proto-life would just be called “food”.