Asimov wrote a story in which people could view the past for a time. The government kept a lock on its usage. A disgruntled scientist who wanted to know if it was his fault his family died in a fire couldn’t get them to check for him so he made his own time viewer and discovered it was easy to do. He released the plans world-wide on the same day to avoid the technology being buried.When they realized what he had done and that it was too late to stop, they explained to him that the past does not begin yesterday or an hour ago or even a second ago and that he had just turned the entire world into an open fishbowl.
Mastroianni and Hart