How to Invest in Areas That No One's Looking At

I think if you took the app set approach and I studied as many subjects as you could, you would elevate your abstract knowledge basically more than the sum of its parts. You're not just getting the abstract knowledge from each of the fields, but you're cross pollinating them to go one level up beyond what you get from individual fields. And it makes valuing individual pieces of knowledge really difficult because you can't account for the connections you'll make between other pieces of knowledge also. But like you said, it ties into focusing on really applicable and generalizable ideas.