For those of us that are not on the level of senior engineers or even non-senior engineers, it is an interesting way to get more exposure and practice with all of this. I would have no idea where to start if I wanted to do some of the stuff I can do with langchain. Not that's it is world-changing but my dev knowledge just hasn't reached that point yet (but I would love for it to). Learning to do all this on my own in better and more efficient manners would be incredible but I wouldn't even know where to start.