Eliezer: Both Douglas Hofstadter and Ray Kurzweil have two children (http://www.acm.org/crossroads/xrds10-2/hofstadter.html, http://sgouros.com/judy/reviews/hofstadter.html, http://money.cnn.com/magazines/fortune/fortune_archive/2007/05/14/100008848/).
Eliezer: Both Douglas Hofstadter and Ray Kurzweil have two children (http://www.acm.org/crossroads/xrds10-2/hofstadter.html, http://sgouros.com/judy/reviews/hofstadter.html, http://money.cnn.com/magazines/fortune/fortune_archive/2007/05/14/100008848/).