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Twitchell and the Burden of Discovery

The Door into Summer

Hubert Twitchell's neglected discovery moves from scientific proof to personal guilt and becomes the instrument that gives Dan a chance to repair his life.

increasingupBearing stren­gth in each eventdowndecreasing
A Brilliant ScientistA Brilliant Scientist from "The Door into Summer". A Brilliant Scientist A major insight Hubert Twitchell develops a temporal displacement effect while investigating a gravitational field theory.
A Brilliant Scientist A major insight Hubert Twitchell develops a temporal displacement effect while investigating a gravitational field theory. He can send objects into another time, but the destination and direction remain uncertain. Classification and obscurity The United States Department of Defense classifies his work, preventing public recognition and broader scientific review. Twitchell's discovery becomes associated with secrecy and professional frustration rather than acclaim.
The Missing ColleagueThe Missing Colleague from "The Door into Summer". The Missing Colleague Leonard Vincent volunteers Twitchell allows his colleague Leonard Vincent to undergo a major displacement.
The Missing Colleague Leonard Vincent volunteers Twitchell allows his colleague Leonard Vincent to undergo a major displacement. Vincent vanishes, and Twitchell cannot know whether he has been sent centuries forward or backward. Scientific responsibility The uncertainty weighs on Twitchell, who fears that he may have exposed a friend to death in an alien era. He resolves not to repeat the experiment with another human subject, even though the apparatus remains capable of doing it.
An Old DemonstrationAn Old Demonstration from "The Door into Summer". An Old Demonstration The returning coin Twitchell demonstrates the device to Dan with coins that reappear after a set interval.
An Old Demonstration The returning coin Twitchell demonstrates the device to Dan with coins that reappear after a set interval. He insists that the event is real and that the timing can be measured, but his manner is clouded by years of disappointment. A forbidden request Dan asks to be displaced himself. Twitchell refuses, seeing no scientific justification for repeating the human experiment and unwilling to risk another disappearance.
A Challenge to VanityA Challenge to Vanity from "The Door into Summer". A Challenge to Vanity The rehearsal Dan asks Twitchell to conduct a full dry run, believing that the old scientist will be drawn to demonstrate his machine.
A Challenge to Vanity The rehearsal Dan asks Twitchell to conduct a full dry run, believing that the old scientist will be drawn to demonstrate his machine. He then challenges Twitchell's work as a hoax, attacking the vanity that has survived alongside his caution. The switch is pushed Twitchell reacts in anger and activates the device with Dan on the stage. The experiment he had refused to repeat becomes real through a personal provocation rather than scientific consent.
A Belated ApologyA Belated Apology from "The Door into Summer". A Belated Apology The experiment succeeds Dan's journey to 1970 and eventual return prove that the temporal effect has practical consequences Twitchell could…
A Belated Apology The experiment succeeds Dan's journey to 1970 and eventual return prove that the temporal effect has practical consequences Twitchell could not safely test. Dan writes to explain what happened and apologizes for doubting him. Recognition still withheld Twitchell never answers the letter. Dan understands that success does not erase the years of humiliation, secrecy, and guilt attached to the discovery, and he prepares to record the scientist's work himself.
Before and during the 1980s
During Twitchell's early human experiments
Spring 2001, at Boulder
May 2001, during the laboratory visit
After Dan returns to 2001