🚀 go-pugleaf

In this contention, a "set" is defined as a group of heterogeneous objects, 
as distinct from a "class" where the objects are linked by one or more 
common factors.
   If science is handed a group of miscellaneous facts, it immediately tries 
to find order among them.  Whence, "classification".  A "set" is of no 
relevance if "order" cannot be found.
   Indeed, in Classical Logic, Definition and Classification precede all 
else.
   Of course, Nature does tend to be shambolic, and Chaos abounds.
   It is we Humans who like things neat and tidy.  But even Causality is 
Classifiable.
   Can we derive a Power Set from four sets : Bowl of Fruit, Zoo, Family, 
and Rubbish Dump?
   Only if we keep the groups separate, as otherwise, the fruit may be 
eaten, the animals (human and non-human) kill and eat each other; and all we 
have left is the Rubbish Dump.  And that hardly empowers anyone; especially 
if no one exists to make any use of it.