Atomic bombs now and then

Original art from the story.

If you wanted to change the horrible present and were somehow transported back 30 years into the past into your own childhood with full knowledge of all that had happened in the intervening years, what would you do? How would you convince your parents that you had returned from your adult future to you own childhood?  If you did convince them, what would they do?

 Time and Again, based on a story by H. Beam Piper, first broadcast over NBC radio as an episode in the series Dimension X on July 12, 1951. The story originally appeared in the April, 1947, issue of Astounding Science Fiction.  This was Piper's first published story.

This story interests me not just for its thought experiment aspect but because it evokes the last days of the Pacific War as it was for people at home in the states, how they thought about the war, and in particular what it was like the day the atomic bomb was dropped on Japan, and more broadly how the future was expected to play out in another generation -- not well. Not well at all.