i wonder how that would feel... i've felt the presence of a spirit before, only once vividly, mind you... it was a very odd experience...
the only stuff i know about the Salem witch trials comes from The Crucible, though, so i dont know how accurate or fictitious it is compared with the truth >.<
I would un-invent transportation such as cars, planes, trains, etc.
Though I'd probably be unhappy about this decision in the long run, it would give me reason to walk or run.
Exercise. :3