Salieri.

It reminds me this quote: "Whenever I want to add new functionality to Sanjay’s code, it seems like the hooks are already there. I feel like Salieri. I understand the greatness. I don’t understand how it’s done."

in the excellent article "The Friendship That Made Google Huge" https://www.newyorker.com/magazine/2018/12/10/the-friendship...