* Wikipedia is not a reliable source. Anyone can edit Wikipedia, so the information on the site is not always accurate. In fact, the article on "In the Year 2525" has been edited multiple times, and the information about the song's author has been changed several times.
* The song was written in 1964, not 2525. The lyrics of the song make it clear that it is set in the year 2525, but that does not mean that it was written in that year. The song was actually written in 1964 by Rick Evans.
* The song was written by Rick Evans, not Zager. Rick Evans is the sole author of "In the Year 2525." Zager is not credited as a songwriter on the song.