Hey, I watched an interesting thing on YouTube. A documentary on what would happen to the Earth if every person suddenly disappeared. There was some interesting things, such as animals escaping captivity and hunting in cities, floods, building decays etc. But my idea is, what if one man was actually left on the Earth? Yes, one. Would it be possible to do without boring the reader? He'd have plenty to do, survival and stuff but there would be no interactions with other people so all the dialogue would be in his head. Has it been done before?