The first copy of this essay captured by the Internet Archive was in October of 2001: https://web.archive.org/web/20011013031756/http://wuphys.wustl.edu/~katz/s

The first copy of this essay captured by the Internet Archive was in October of 2001: https://web.archive.org/web/20011013031756/http://wuphys.wustl.edu/~katz/scientist.html https://web.archive.org/web/20011013031756/http://wuphys.wus... The same timestamp at the bottom of the essay can be found on other pages by Professor Katz, such as his list of publications which includes papers from 2019. I suspect that the timestamp of 1999 is incorrect. https://web.archive.org/web/20191206233227/https://web.physics.wustl.edu/katz/publist.html https://web.archive.org/web/20191206233227/https://web.physi...