Iron triangle? (Introduction to Health Care)

What are your thoughts about the iron triangle? Do you feel it’s a good assessment? Why/why not?

I added this clip especially for those without access to the textbook at this stage.

https://www.youtube.com/watch?v=yawQUJ7wSSI

Please respond in at least 260 words. If any outside research is used, please remember to list the reference at the end.