There is no real world application for ai in my life and I would suspect that is the case for 99% of us. There's nothing AI can do for me that I can't do a thousand times faster and better myself. Whether is is writing, doing a drawing, selecting material or equipment, doing calculation that apply to my endeavors....nothing. It's Googling for you - that's all. I have actually requested information from ai on some really esoteric topic that is of interest to me and it has quoted back to me some bullshit I posted on some forum. That's its 'sources'.
I said the same thing about CAD the day I finished two years training as a draftsman. It's still true. What I do is design and build on a contract basis - all different all the time. There are no templates. Doing a drawing makes you visualize and every cut, every surface, every fastener, the unit cost of every bit of material, etc. I always say that after doing that, actually building something is a follow up. That is how you build up an encylopedic knowledge. It's memory, experience, knowing the properties of material in real world conditions, intuition, etc. There is great value in the exercise.