okay... I know it is a MAJOR nit pick but...

"Art and stories depend on things like synesthesia for immersion."

Err.. Synesthesia is a neurological condition that is involuntary, one of the most common forms of which is color-graphemic synesthesia, letters or numbers are perceived as inherently colored.

Very rarely would a story teller rely on a condition that an estimated 1 out of 23 people have and presents in various forms, for immersion