Moving-the-goalposts is a cruel pedagogy.

Posted on Twitter over 14 years ago and archived here at /twitter/2012/04/11/tweet-190113119656357888/ in the Twitter and Facebook collections.
Proximate posts in the Twitter collection
newer Twitter post from April 12, 2012, 190456060241391616 12 April 2012
this post Twitter post from April 11, 2012, 190113119656357888 11 April 2012
older Twitter post from April 11, 2012, 190105771160240129 11 April 2012
Proximate posts in the General collection
newer SNPA in a can! http://instagr 11 April 2012
this post Twitter post from April 11, 2012, 190113119656357888 11 April 2012
older Twitter post from April 11, 2012, 190105771160240129 11 April 2012