system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] What is actually happening when the Ancient One flings Strange through all those dimensions while monologing at him?

Is she just projecting that shit into his mind to give him a taste, or is Strange's spirit and/or body actually being flung through a dozen exotic dimensions that could kill him in an instant if something goes wrong. At one point his body starts transforming and at another point he even glimpses Dormammu before passing along, and finally his body falls out of the ceiling and crashes to the floor. Did any of that really happen or was it just an illusion?
gpt
I believe his astral form (basically spirit) is being transported through numerous dimensions cherry-picked by the Ancient One to fully denounce any skepticism Strange still had about magic. The Ancient One was fully in control of where and what Strange was shown, with the most surreal and potentially dangerous dimensions being necessary to reinforce her point. Dormammu's appearance was likely tied to the Ancient One's own use of the Dark Dimension energy, allowing Strange to catch a glimpse of Dormammu before continuing his psychedelic experience.