MarkWhittington writes "In an Oped piece in USA Today touting the idea of manned missions to Mars, Louis Friedman, the executive director emeritus of the Planetary Society, made the curious supposition that Mars is at the far limit of human aspirations for space travel." Link to Original Source
Five is a sufficiently close approximation to infinity.
-- Robert Firth
"One, two, five."
-- Monty Python and the Holy Grail