(Exclusive): Bill Gates Talks Working with Daughter Phoebe on His New Netflix Show: ‘Fun to See Her Energy’…see more

“I get to control my schedule,” the billionaire philanthropist tells PEOPLE. “So if I’m not having mostly good days, that’s kind of strange.”

“It wasn’t hard in any way,” Gates says of the thought-provoking project. “It was a real chance to talk about topics that I care about and I have views on, and I learned a lot.”

Something that comes up frequently with Gates, and is central to his Netflix show, is learning.

“I’m deeply curious about a lot of things and trying to think how I can play a role in those things,” he tells PEOPLE, noting that part of the journey means examining what works and being honest about what doesn’t, including when it comes to the question often asked about him and other members of the world’s ultra-wealthy: “Can you be too rich?”

Although he doesn’t agree with every opinion on the matter — like, say, outlawing all billionaires — Gates says it’s clear the system isn’t working.