Original sentence: 
Hunt]] (2010), [[Arthur Jensen]],{{sfn|Rushton|Jensen|2005}} [[J.Another group including [[Earl B
.Flynn, Joshua Aronson, Diane Halpern, William Dickens, and Eric Turkheimer (2012), have argued that the environmental factors so far demonstrated are sufficient to account for the entire gap.Jensen and Rushton consider that it may account for as little as 20% of the gap.Meanwhile, although Hunt considers this a vast overstatement, he nonetheless considers it likely that some portion of the gap will eventually be shown to be caused by genetic factors.Nicholas Mackintosh (2011) considers this a reasonable argument, but argues that it is likely impossible to ever know for sure.Philippe Rushton]] and [[Richard Lynn]], have argued that this is impossible
Edited sentence: Flynn, Joshua Aronson, Diane Halpern, William Dickens, Eric Turkheimer (2012) have argued that the environmental factors so far demonstrated are sufficient to account for the entire gap.Nicholas Mackintosh (2011) considers this a reasonable argument, but argues that probably it is impossible to ever know for sure