Day 43. I went up to the control compartment again. I don't know why. The first signal I sent didn't even travel a tenth of the way. Another dry message: "Day 43. I'm still alive. Regenerating oxygen and water....

Day 41. The second problem is — isolation — became most apparent. Robinson could walk along the shore, gaze at the horizon in anticipation of a white sail, or study the flora and fauna of his island. In my...