system
Given the following post, respond as if you're commenting on Reddit:
human
[The Emperor's New Groove / Emperor's New School] Why is the entrance to Yzma's secret lab a rollercoaster?

nevermind the wrong lever, The right lever leads to a rollercoaster that is entrance to her secret lab, but Yzma clearly hates rollercoasters so why does she have it?
gpt
It isn't a roller coaster. It's a gravity assisted two person people mover designed to deliver the passengers as quickly as possible to the depths of her "secret lair" and automatically dress them in lab safe clothing in the process. 

That it has loops and curves is the result of having to follow the natural curve of the cavern to minimize the work necessary to build it - thus minimizing the exposure of work crew that would reveal its location; and, to manage the momentum so it arrives with the right speed and doesn't injure the passengers. 

It just happens to behave much like a roller coaster, much to Yzma's chagrin. 

Look, she's a brilliant chemist. She's not an engineer.