 Why of these is not a reason Houlihan agreed to help the little people?
A one-time Air Force officer, he has turned to fantasy in his lighter moments, to bring us such brightly sparkling little gems as this. houlihan's equation by ... But its small, mischievous pilots had a rendezvous with destiny—on Earth. It was in a park near the nuclear propulsion center—a cool, green spot, with the leaves all telling each other to hush, be quiet, and the soft breeze stirring them up again. Without this coefficient to give us control, we would have lacked a workable equation when we set about putting the first moon rocket around those extraordinary engines of ours, which were still in the undeveloped blueprint stage. Perhaps you had better take my word for it that without this equation—correctly stated, mind you—mankind would be well advised not to make a first trip to the moon. Not children, but a group of little people, hard at work. I had seen them first as a boy of eight, and then, very briefly again, on my tenth birthday. Or so the legends affirmed, though I've wondered often about the truth of them. Yet without reaching a decision in so many words I knew suddenly that I had to talk to them. Simply because I was so lonely that my mind had become clogged.
 He figured he was the only one with knowledge to help them solve their problem
 He saw it as an opportunity to clear his head about his own work  He figured their ship could act as a test case for his work  He felt a kinship with them because of his family's history  He figured he was the only one with knowledge to help them solve their problem