A probably unfinished project engaging John a few months ago was to resurrect his unpublished "THE FEASIBILITY OF INTERSTELLAR TRAVEL" from the early 70s. Abstract: Optimists have proposed many schemes for interstellar travel, usually aimed at reaching nearer stars within a human lifetime, but these schemes usually involve extrapolations of present science. Pessimists, finding flaws in these schemes, conclude that interstellar travel is forever infeasible. We show that interstellar travel is entirely feasible with only small improvements in present technology provided travel times of several hundred to several thousand years are accepted. Naturally no-one will start thousand-year journeys within the next few hundred years unless fleeing a danger, because improved technology may allow earlier arrival with a later start. However, our solar system will support life for several billion years, so many-thousand- year journeys will be undertaken unless a unified society forbids it and can enforce the prohibition against even rather small groups. ----------------------- Whit Diffie and I worked rather hard to retrieve it from an unconventional character set and an extremely unconventional document compiler. (Even Julian helped, simplifying a Lagrange multiplier calculation.) John's motivation for writing it in the first place was annoyance with what he claimed were faulty analyses published at the time. He resurrected it out of frustration that no one had corrected these analyses over the intervening decades. In whose court now lieth this ball? --rwg