Actually, that is NOT what the science says. It says that all life that exists *today* is descended from one line of the original organisms. There may well have been several different lines of life at the beginning, but all but one has died off.<quoted text>
Question for you.
You obviously believe that all life on earth has been traced back to a single speck of life. The first life form that self started in a very hostile environment ( of course it was not hostile to the first life form in fact it was perfect ) now science claims the earth is 4.7 billion years old.
And given that amount of time through natural selection we have all the live we see today plus all the the life that has gone extinct through natural selection.
Yet in 4.7 billion years a second life form never spontaneous started like the first life form. All life can be traced back to this first life form. All life has this DNA all put together the same way.
The other lines died off. What we see today is from one line (or, perhaps, more that merged--we don't know the genetics of early life).No second alien type of life form in 4.7 billion years. Only once did this happen why not a second time. After all things on earth just got better and better for life (as we know it Jim) yet the Goo Pool never produced a second life form.
My *guess is that life is fairly common in the universe, but I don't know that. Multi-cellular life is probably much less common (given the time it took on earth to develop).Why is all life related on earth and not a second life form, so to say a second blood line from a second original life form?
Why is that?
Do the math either life is not that special
And we should have by now seen a second very alien type of life. Or life is very very special and to think all this came from one speck of life is ludicrous.