"What happened?"
"Bonestell will do the backgrounds, but he has to know what rocks we're putting in the rooms. What rocks are we? Anybody have an idea what the surface of Mars looks like? God, how could I have missed that?"
"Sit down," Dex said casually, "we want to resign."
Hazel added, "You can have your rocks in 24 hours. We worked it out weeks ago. I did read Van Es, and Harry has prospected, and Dex knows minerals, and Mel pushed his way through Tyrrell's 'Principles of Petrology'—"
"The science of rocks," Mel interrupted, between bites of steak.
"We got interested one day." Frank's pretty, dark eyes danced.
"We want to resign," Dex repeated casually, "so sit down."
I sat.
They began throwing the ball faster than I could catch: "No atmosphere on Mercury, then no oxidation; I insist there'd be no straight metals.... The asteroids? Ferromagnesian blocks of some kind—any basalts around here?... For Venus, grab a truckload of granodiorite—the spotted stuff—from the Sierra-Nevadas and tint it pink.... Lateritic soils for Mars? You crazy? Must have water and a subtropical climate...."
It hit me: a valid use for the GG, one that already saved money. Make them a brain team, trouble-shooters, or problem-solvers on questions that could not be solved.