Why are symbols not frozen strings?

Question

I understand the theoretical difference between Strings and Symbols. I understand that Symbols are meant to represent a concept or a name or an identifier or a label or a key, a

Answer 1

See this answer: https://stackoverflow.com/a/6745253/324978

Main reasons: performance (symbols are stored as integers, and are never garbage collected) and consistency (:admin and :admin will always point to the same object, where "admin" and "admin" don't have that guarantee), etc.