Calling his core philosophy “the whim of iron,” Garth Johnson willspeak about his obsession with craft at 5:00 p.m. in Room 103 of theDesign Building.Johnson, ceramicist and publisher of Extreme Craft(http://extremecraft.typepad.com) said he’s made over 800 posts to hiswebsite. The lecture is essentially the “greatest hits” from thoseposts, he said.”It’s really forty-five of the most shocking, little amazing stories,”Johnson said.Johnson said he will also be on campus tomorrow, popping in on classesand interacting with students.