Author Malcolm Gladwell made his fourth appearance on The Colbert Report last night, promoting his new book What the Dog Saw. Now, I haven't personally read Gladwell's books, or those by any other author for that matter, but based on what I don't know, if this trend of Malcolm Gladwell appearing on The Colbert Report continues, we'll soon reach a tipping point, and Malcolm Gladwell will be the guest on The Colbert Report every night. You can't argue with science.



Gladwell's previous appearances can be found after the jump.

The Colbert Report airs Monday through Thursday at 11:30pm / 10:30c.