Chamberlin had worked extensively on Mercury and so he knew its weaknesses, so when he turned his considerable talents to improving the vehicle he knew it would require an overhaul to do it right. Between January and August of 1961 Chamberlin conceived of a new vehicle which would build on Mercury's strengths an eliminate many weaknesses. His ideas soon took the advanced Mercury program from what was to have been an upgrade to an entirely new program - which he felt could accomplish much of Apollo's goals. All through the summer of 1961 Chamberlin rewrote his ideas for a Gemini lunar mission. His ideas for a spider-like lander soon coincided quite handily with the ideas which were coming from John Houbolt at Langley. It was becoming evident that lunar orbit rendezvous was the way to get to the moon, and this fit nicely with the proposals that Chamberlin had devised. But his ideas were met with much scepticism by Abe Silverstein, director of Space Flight Programs.
Chamberlin must have never quite given up on the idea because the report at the end of this book comes from mid-1965. Some engineers must have felt that the only way to complete Kennedy's punitive time-line was to resort to the ever-reliable Gemini, but it ws not to be. The contracting engineers and NASA rallied to the call and as they say, the rest is history.