"Doctor," Mitchell said, "what would you say the most common complaint of man is?"
"I would have said the common cold," Macklin replied, "but I suppose from what you have said you mean headaches."
"Headaches," Mitchell agreed. "Everybody has them at some time in his life. Some people have them every day. Some are driven to suicide by their headaches."
"Yes," Macklin said.
"But think," Ferris interjected, "what a boon it would be if everyone could be cured of headaches forever by one simple injection."
"I don't suppose the manufacturers of aspirin would like you. But it would please about everybody else."
"Aspirins would still be used to reduce fever and relieve muscular pains," Mitchell said.
"I see. Are you two saying you have such a shot? Can you cure headaches?"
"We think we can," Ferris said.