I experienced it pretty profoundly when taking a plant systematics and identification course. I had always loved plants as a gardener, so the added knowledge of general plant anatomy lit a fire in my brain.
Now when I would learn a new plant, I would notice it everywhere, even out of the corner of my eye while driving at speed on a highway.
I’m still a slut for the thrill of learning a new plant.
Peter Funke? The famous anal-rapist?