Modus Ponens: A key language step March 7th, 2005 By Denis • 1 Comment Highlight — A story from New Scientist on a key language step, also known as the Modus Ponens inference rule. This is related to mathematics and to the magical number 4. More on this another time. Facebook Google+ Twitter Pinterest Email Print Delicious Digg Fark Google Instapaper LinkedIn MySpace Newsvine Pocket Readability Reddit StumbleUpon Tumblr Yahoo! Comments on Modus Ponens: A key language step See also: How Much Can Your Mind Keep Track Of?