Because it is one thing to feel like you have learned something and another thing to have actually learned it well enough to put it in use. There are so many YouTube tutorials on all kinds of subject that will make you feel like an expert in the field after watching, and then you start doing the thing they have supposedly taught you and you can't remember a darn thing, because your "learning" was only ever skin deep and never meaningfully tested or reinforced.
To me this is intuitively true based on anecdata. 2 examples
1) learning spanish - when I hear or read a phrase I don't know, I type it into the LLM and I learn a new word/phrase. Sure, I could have cracked open a spanish language dictionary, but tbh, I wasn't going to do that. Not to mention that dictionaries are translating word by word and not phrase by phrase.
2) growing vegetables in the garden. I literally watched YT tutorials and did what they did, and now I have vegetables that I didn't before. Yes, I could have probably could have gotten this from a botany book, but once again, I probably was not going to do this. I also was trouble shooting a lot in gemini
Here are the problems I traversed: - How much water should I give these per day? what's the watering schedule? - how much sun vs shade? - when do I move seedling to the ground outside? - Is trimming good? which parts and when do I trim? - [take a picture of weird growth] - Is this a disease on the plant? Or part of the plant naturally?
It definitely wasn't a single prompt, but two hours of back and forth, with a lot of time spent thinking (me, not LLM) in between. There were multiple times where I misunderstood something, so if I just read a book I'd probably get stuck many times.
I've wasted a ton of my life already trying to make llms work for learning over the last few years, I'm especially bitter about it. I think this technology is a scam made to make us reliant on a think-for-me machines.
I have many times asked it something I was slightly curious about, got the answer after the first or 2nd-3rd prompt, spent 3 minutes in total and forgot it after 15 minutes probably.
But a few times I've spent an hour or more on a topic, asking many questions, thinking between responses, and I actually learned something.
Now, if I go back and forth with the LLM to say, taking the language learning example, to explore the etymology of the word (which for me is far more interesting than the translation itself), then I learn a ton more.