No anatomists can deny these six Haversian canals at Phoenix’s foot

Picture 1: six Haversian canals labeled
http://www.wretch.cc/album/show.php?i=lin440315&b=20&f=o1555128092.jpg&p=2

Picture 2: source of the above picture
http://www.flickr.com/photos/hortonheardawho/2532325450/

On May 30, 11:56 pm, Lin Liangtai yahoo.com.tw> wrote:

Anatomists may deny that it is impossible for this to not be chance or
that complex arrangements are of common structures or forms of
organization. I guess we cannot deny that a river is like a blood
vessel either, but maybe when blood vessels evolved they just
incorperated the advantages of flow of liquid. That something is
similar doesn't make it necessary that it is identical, this can be
shown by counterexample. Your heading should read, "No anatomists can
deny these six Haversian canals at Phoenix’s foot share similar flow
patterns as human body parts"

PROCEDURE FOR CONSTRUCTING A COUNTEREXAMPLE:

A counterexample to an argument form is a substitution instance whose
premises are true and whose conclusion is false. Since the validity
of an argument depends on its form and since only an invalid argument
can have true premises and a false conclusion, a counterexample to an
argument form proves that every substitution instance of that argument
form is invalid.