wrote:
[...]
JR> Also something else to ponder... a "Deep Thought" if you will.
JR> Human DNA is 98% the same as chimpanzee DNA what keeps them from
JR> being somehow related, also the water content of a watermelon and
JR> a cloud are approximatley the same, what keeps them from being
JR> related :)
Let's see how deep this thought is...
DNA is sampled from two species. The sequences are correlated, and
a measure of similarity is found. This measure is always less than
100% across two species.
Now, let's sample a cloud's water and a watermelon's water.
Let's "sequence" the water molecules... in one, it is H2O,H2O,...
and in the other, it is H2O,H2O,...
The "water sequencing" reveals that a cloud and a watermelon are
identical. Now, given that clouds and watermelons are not
actually identical, what conclusion do we make? Most people
will figure out that "water sequencing" is not a good measure
of similarity: any two items containing water will give the
same "sequence".
Now, let's sequence the watermelon's DNA and the cloud's DNA...
What? The cloud doesn't have DNA? What a shock...
In a roundabout way, I hope I have gotten across the point
that your "deep thought" is actually rather shallow, more like
an empty pie tin at the bottom of a high jump, since the
analogy given fails from several different viewpoints to
be analogous.
A page by Wesley R. Elsberry