 Why does Jerry visit Professor Coltz?
The DELEGATE FROM VENUS By HENRY SLESAR ILLUSTRATOR NOVICK One part of his mind wanted him to play it cagey, to behave the way the newspaper wanted him to behave, to protect the cozy Washington assignment he had waited four years to get. They split off a few blocks later, and Jerry walked until he came to the Red Tape Bar & Grill, a favorite hangout of the local journalists. There had been hourly conferences at the White House, flying visits by State Department officials, mysterious conferences involving members of the Science Commission. They knew that Senator Spocker, chairman of the Congressional Science Committee, had been involved in every meeting, but Senator Spocker was unavailable.
 Jerry remembered something Professor Coltz said when Jerry was a student.
 Jerry thinks Professor Coltz may be a Venutian in disguise.  Jerry remembered something Professor Coltz said when Jerry was a student.  Jerry remembered that Professor Coltz was interested in robotics.  Jerry thinks Professor Coltz may be a domestic terrorist, using an extraterrestrial visit as a cover.