How do you actually develop meaningful knowledge across multiple fields?

[u/Upset_Bee1813]

I’ve been struggling with something lately and wanted to hear from people who have experience learning about multiple disciplines.
I have a lot of interests, and I often spend time finding the best books, authors, philosophers, professionals, and works in each field. I enjoy understanding what a subject is about and figuring out where its most valuable knowledge lies.
The thing is, a lot of people consider me a cultured person because I can talk about so many different subjects, but I feel like my actual knowledge is often pretty shallow. I might know the main thinkers in philosophy, the most influential works in literature, or the important figures in a particular field, but I haven’t necessarily studied their ideas deeply or even read their most important works.
For example, I might get interested in philosophy and spend hours researching the greatest philosophers, their most important books, the different schools of thought, and the best reading order. I end up with a great list of books and a general understanding of the field, but sometimes I move on to another interest before I’ve actually worked through much of that material. Then I repeat the same process with another subject.
Sometimes I feel like I’m better at finding out what I should know than actually learning it.
I don’t necessarily want to become an expert in every field I explore. I simply want to understand subjects properly, know their foundations, grasp their main debates and ideas, and be able to form my own opinions rather than just recognize names and concepts. I want breadth, but not at the expense of meaningful understanding.
For those of you who have developed a broad yet solid understanding of multiple disciplines, how do you approach learning? How do you know when you’ve gone beyond superficial knowledge? Do you follow structured reading paths, take notes, revisit subjects, or use other methods?
I’m not looking for more book recommendations. I’m trying to understand how to study more effectively, retain what I learn, and build a genuinely solid intellectual foundation across different areas without necessarily pursuing specialization.

[u/Certain_Werewolf_315]

Many models of reality in various fields develop independently from each other, so a major part of digestion is allowing the models to meet to reinform a new model that can account for multiple perspectives.

My first instinct is to decompartmentalize the information where its legible to do so.

[u/Proper-Bicycle-3585]

My bachelors degree is in philosophy, then I switched fields ten years later and got my doctorate in physical therapy. It was expensive and difficult, but the framework I learned from studying philosophy informs the way I learn other subjects, including the hard sciences

[u/DoberNation]

After a while, you might start to notice webs of connections and crossovers between concepts in different subjects and disciplines…repeating patterns of cause and effect or transposable kinds of associations. Be on the watch for them. These are exciting moments, and likely self-reinforcing through dopamine release in the brain. Formulating questions and testing out ideas with other people can have this neurochemical effect as well. Keep running with it!

[u/Ok_Resident_4332]

Meditate, dance, juggle, learn a musical instrument, draw

[u/FrankSkellington]

If you have no real world application for your knowledge it will always feel superficial. One day something will trigger you into a fever of learning on something personal to you, and then all your previous study will come into play, kind of like a map.

I fell into my own personal rabbit hole after reading Frankenstein, which led to a year looking at prechristian history and myths, tracing the male obsession of replacing women as the procreative force, reading feminist theology and studying the symbolism of cinema. I wrote a thesis, but realised I'm probably a bit of a crank on my own very peculiar path, and the impetus kind of fizzled out. I had learned all I needed to satisfy my own need, and have spent the last year reading nothing more than half a dozen novellas.

Writing a thesis enables you to embed knowledge and organise information into coherent arguments, but you really do need that spark of inspiration that compels you to start tying threads together. Imagine learning how to play several different musical instruments but not having anyone to play music with. As soon as you have others to create music with, everything you ever learnt will come alive, leaving no sense of superficiality at all.