I like how he so emphatically says that it is wrong, and cites style guides that say it's OK to use 2 spaces. From the HLA source he cited (http://www.mla.org/

I like how he so emphatically says that it is wrong, and cites style guides that say it's OK to use 2 spaces. From the HLA source he cited (http://www.mla.org/style_faq3 http://www.mla.org/style_faq3): "... As a practical matter, however, there is nothing wrong with using two spaces after concluding punctuation marks unless an instructor or editor requests that you do otherwise."