From memory, there's a story by Alfred Bester about people being punished (I forget for what) by being offered a choice of being thrown into the future or the past. No preparation either way.
It's a short story, and doesn't follow an individual person who's been time displaced. It just ends with a suggestion that some street people were thrown into the past and never figured out how to manage.
I recall a popular discussion topic on the 'net which essentially goes like this: we take you, a XXI century human, and throw you back in time, say into medieval Europe. Are you going to survive? Prosper? What knowledge that you have will be useful to you? Will you be able to recreate useful things like antibiotics? Or will the local peasants just stone you to death for being too weird?
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