Collaborating w/ someone can mean intense moments where ideas blip into existence morph, fuse, & react. Uttering a single word can trigger a chain reaction of ideas, shifting yr perspective & arriving at an end result which you couldn’t possibly have imagined by yr lonesome self.
Learning solely on your own is not sustainable. If you kicked off your journey with self learning, great! But inevitably you need to be refined with the help of others. Learning does not end when a destination is met, it’s a state that must be continually maintained.