[asa] Is time deep enough

From: Dave Wallace <wdwllace@sympatico.ca>
Date: Wed May 30 2007 - 11:11:14 EDT

Jack wrote:

> You also clearly do not understand what Darwinism is saying. Darwinism
> does not say that a bacteria begat a fungus, or some other multicellular
> organism. What it says is there is some random mutation in a bacteria,
> and this mutation makes it more viable than its brothers, and it passes
> it on to its offspring. Over time only those bacteria with the
> beneficial mutation remain. And you repeat these micro steps billions
> of times, over millions of years. Perhaps one mutation makes the
> individual cells clump together, and another allows them to share
> information between each other and collection of multiple cells. A
> couple of simiple steps, but now do you have two bacteria or a single
> multicelled organism, or something in between?

Assuming the solar system is something like 4.5 * 10**9 years old I can
see how life such as a bacteria which reproduces in a very short period
of time can evolve. However, once we get to the higher forms of life
that have a generation every year or longer, I can't help but wonder if
there really has been enough time. Assuming human have been around for
about a million years and a generation is about 10yrs and:

Molecular evidence further suggests that between 8 and 4 Mya, first the
gorillas, and then the chimpanzee (genus Pan) split off from the line
leading to the humans; human DNA is 98.4 percent identical to the DNA of

Then the minimal number of generations between the start of the line
leading to humans and the first humans is 4,000,000-1,000,000/10 or
300,000 generations.

Is 300,000 really enough generations to make the changes from our common
precursor with chimps and us? Even considering that our dna is 98
percent the same.

Same question applies to:

The Cambrian explosion is the geologically sudden appearance in the
fossil record of the ancestors of familiar animals, estimated to take
around 10 million years from 530 to 520 million years ago.

Is there really enough time?

Does anyone have a reference to something that a none specialist can
deal with?

I have seen answers that assume materialism or deism and the fact that
we are here and then say there must have been enough time, but I do not
find that kind of cheap answer at all satisfying.

Dave W

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Received on Wed May 30 11:11:24 2007

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