Two Timer in the February 1954 issue of Galaxy Science Fiction. Here is a brace of vignettes by the Old Vignette Master. short and sharp. like a hypodermic! - Experiment - Sentry
A human brain-controlled spacecraft would mean mechanical perfection. This was accomplished, and something unforeseen: a strange entity called Mr. Spaceship
Tom's extraordinary machine glowed--and the years were banished from Old Crompton's body. But there still remained, deep-seated in his century-old mind, the memory of his crime.
In the title tale, narrator James 14 returns home with Mama to 1898 village when his father Les, time-traveller Ambassador to aliens, vanishes from 1975 jet-pack city. When the "mothaship" takes the anointed few into the brave new world, those left behind are angry. "0wnz0red" asks - what happens when hackers hack the human body?
That he was a phony Swami was beyond doubt. That he was a genuine prophet, though, seemed. but then, what's the difference between a dictator and a true prophet? So was he....
Zeckler was a con-man, a human con-man. But he had no idea what he was up against when he decided to try to outwit the Altairians, an alien race that believes telling the truth is a weakness. Really he never had a chance.