I think someone from today would be more lost in Jefferson's time than someone from his time would be lost today.
Compare getting food. I have some vague idea of how to use a musket or a bow and arrow, but hunting with one? I'd starve. The operation of making dinner from store bought items from 1800 would be lost on me-they used to spend a LOT of time making meals. Vice versa? Appliances are made to be easy to use-and learn. Foods are often already made to eat at the store, and the components that go into food, like broth or bread are often already made.
Travel. Learning to ride a horse takes a long time. I'd ridden in cars as a kid, but I learned how to drive an automatic in 15-30 minutes.