Not to threadjack, but are there any guidelines for that? He seems to use dashes where most writers would use commas to separate out a sentence subphrase. His "

Not to threadjack, but are there any guidelines for that? He seems to use dashes where most writers would use commas to separate out a sentence subphrase. His "Aird — who is white — has failed..." would normally be "Aird, who is white, has failed..." I'm curious if it's just a matter of choice to use the dash there. But yes, he overdoes the dash. I'll bet he has Microsoft Excel set to export as DSV.