Is enlightenment gradual or instantaneous?

The following excerpt is from a samvaad (dialogue) session with Acharya Prashant.

Question (Q): Acharya Ji, we have heard many stories of kings getting enlightened in one moment. So, is enlightenment gradual or instantaneous?

Acharya Prashant (AP): It’s like a jigsaw puzzle. (Pointing at the arrangement of posters on the wall) Do you see this arrangement there? Let…