the difference is that if I 'knew' it didn't work, I would simply get a MacBook Air to mirror. If I knew it worked, I'd get a loaded up MacBook Pro. FYI, going to retire early (51) and will be traveling in a small RV, hence the reason for seeing if this worked. I could eliminate the need for a monitor and just use the vision pro as my entertainment and computing setup. In theory I'd be able to sit in a coffee shop and do CAD on a "100 inch monitor" while only having to bring a laptop, keyboard, mouse. I guess a loaded up MacBook Pro couldn't hurt...