Out of curiosity, I looked at the year of the copyright ...and the book was printed even before our children were born.

 It was kind of curious how the same idea which I thought was original, worked into the story of a well-known children's author.  I only have one book in print, "The Evolution of Confusion" ...and I had thought I'd like to write a children's book next, but that trip to the library sort of dimmed my hopes on that endeavor.