 In the fall of 2007, the number of students registering for 3.091 reached 570 students, over half the freshman class.The largest lecture hall available on campus seats 566 students, enough to amply house the class.Sadoway much preferred teaching in one of the smaller lecture halls, seating only 450; as such, the Institute had to take the unprecedented step of streaming digital video of the lecture into an overflow room to accommodate all the students interested in taking the course.