In article ,
Archimedes Plutonium NOdtgEMAIL wrote:

Chitin poses a problem. And unless I can wiggle out of the problem, I am stuck.
One possibility is that calcium for animals is linked with the electrical system
in animals in that you cannot get the fast motion with large mass unless it was
calcium based. Chitin based is okay for tiny mass.

There are and have been some good sized and fast chitin animals. I've seen
a fossil crustacean about two meters long. Cephalopods and many decapods are
fast. One the other hand, most vertebrates are not very big. For every big
catfish there are a zillion species of little minnows. Most species of mammals
are mouse size or not much bigger. Ditto reptiles and birds and amphibians.

Not sure whether I can wiggle out of this.

Wiggling out of evidence that your theory is bogus is hardly the attitude of
a scientist.

One possibility is that there are 5 Kingdoms. One with a calcium framework (animals
of large mass) another with a carbon framework (plants), another with a chitin
framework (animals of small mass), and the last 2 with no framework.

Silly ideas. There are squid that weigh over a ton. No chitin, no bones.
There are vertebrates that weigh less than a gram.

I wiggle out of the problem be calling low mass animals with chitin their own
kingdom.

Wiggle away.

I mean, in physics we have the 5 basic forces-- Coulomb, StrongNuclear,
WeakNuclear, gravity, and antigravity. So, I wiggle out of this jam by giving
the chitin animals their own kingdom.

Don't know if I like that solution as of yet.

Nobody else does, but that's never bothered you before.