As of this date, 2017, Dan Christensen has been a stalker that demonizes and harasses other authors, for now 10 years.
Google needs a abuse category of Stalking.
Ever since Internet was invented and we have newsgroups, we have had a huge number of sick people, sick in mind, sick in intelligence, who have glummed onto these newsgroups because their primitive minds love to stalk people. One of the major reasons that the sci.math and sci.physics in 1993 was full of authors with a dot-edu address, was because by 1993, it was not known that crazy stalkers were to find these newsgroups and to be pelted by a crazy stalker was soon on the horizon. So, by about year 2001 rarely did you see anyone posting with a .edu address. Stalkers drove them away or into "read only mode".
And stalkers hide behind this "freedom of speech" when that freedom is twisted into being "freedom of harassing others". Why creep around buildings and stalk, when all you need do is boot up the computer and stalk the world wide web.
Hanson is a worst case example of a foul mouth who wants to stalk and wants to demonize others.
But then there are other stalkers with mental issues such as Christensen or Moroney.
Moroney is a crippled in mind who wants to stalk-- being doing it for 23 years, and harassing others.
Neither Dan Christensen or Mike Moroney knows science to warrant their presence in sci.math or sci.physics. Each spends every day thinking-- how to rag on someone, today. Neither has anything to offer science, yet they planted themselves in these newsgroups.
Time to kick both Dan Christensen and Mike Moroney out.