When you really investigate the animals that the Bible prohibits from the diet, 
you will find that the only ones banned are the 'garbage processors' that eat 
the filth and process it.
 
All fish without scales and fins are sharks and catfish.  These are carrion 
eaters.
 
Birds - song birds are allowed but the carrion eaters aren't, eagles, vultures, 
all birds of prey.
 
Four-legged beasties - only the cud-chewing split hoofed are eating the proper 
foods (before man patented their food) for our digestion.
 
Crustaceans & Shellfish - all eat the refuse produced by men and animals and 
are therefore dangerous in the diet.
 
Only the scaly/finned fish are clean enough to eat raw without fear.  
Apparently their metabolisms do not ingest anything harmful to man.
 
You are right!  JHVH knew that they wouldn't have the science to prove His Law 
so He just TOLD them NO!  We, being so much better educated, should be able to 
realize the necessity for His Laws and comply voluntarily.        Or - - - else!
 
Bill Keen