JB wrote:

...
I lost your context then. The only thing in common between the skyscraper
and mud hut is that they have a maker and some plan. Maybe some wood. If
you are talking Chemistry, then you are getting specific and I doubt they
use the same mud formula in the skyscraper anywhere but in the flower pots.
...

Iron is iron, whether in a pure form, alloys, rust or other ferric
compounds. Silicon is silicon, whether in a window pane, silicon oxide,
or some other compound of silicon. Calcium is calcium, whether in
limestone, cement, earth, or other calcium compounds, etc., etc. ...

Back when I was in college, someone did some computations of how the
body of Plato would have decayed and been dispersed throughout the world
in the thousands of years since his death. They arrived at the
conclusion that everyone on the planet would have at least 6 molecules
from Platos' body in their own bodies (mostly water molecules since that
is the major component of the human body) ... I cannot verify the
accuracy of those computations--however, you get the drift--I am part
Plato! grin

Regards,
JS