Princess Twilight Sparkle had transformed dramatically through the years since she moved to Ponyville, but one thing that never changed was her scholarly heart. It has always been a habit of hers, good or bad, that she never lets a question lie without doing her absolute best to answer it.
For weeks now, one such question in particular has gripped her mind in a strangle-hold, and refuses to leave the forefront of it. The princess of Equestria has finally had enough, and at long last is ready to mollify her mind's demands.
A one-shot containing but one of my many personal theories regarding the enigma of Cozy Glow.