[drjasonharrison]

The first copy of this essay captured by the Internet Archive was in October of 2001: 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.physi...

[piznaul]

I was a TA for this professor in ~2000, and this article had already existed (and made the rounds of the grad student offices). I suspect that 1999 is correct.