The foundational reason / concept behind cubic splines "clicked" for me whilst waiting to go into the room to sit the exam. I went from "fuck I have no idea" t

The foundational reason / concept behind cubic splines "clicked" for me whilst waiting to go into the room to sit the exam. I went from "fuck I have no idea" to "this is easy" in the space of about 5 seconds. The responsibility for not knowing until that point is more likely to be on my shoulders than the lecturer's, however.