By Bob Brigham There has been a great deal of speculation as to why retired Judge Michael Luttig spoke so slowly at Thursday’s hearing of the House Select Committee Investigating the Jan. 6 Attack on the U.S. Capitol. “I like how this guy treats every line of his testimony like he’s engraving it on a national monument. And frankly, he really *is* engraving it for history. And he seems to know it,” Vanity Fair writer Joe Hagan wrote in a Twitter thread. “I also respect, despite how halting he may sound, that Luttig is not setting himself up to be a mere soundbite maker. He’s speaking to history…