CNBC takes a look at “what happened” to weaken Barnes & Noble and put the company in play, which includes an interview with executive chairman Len Riggio. He remains hopeful that recent adjustments will help: “We’ve done a lot of things this year to try to put ourselves on the right track and to get our comp-store sales number to head in the positive direction … and we are hoping that that comes — we are planning for it to come — during this holiday season.” Riggio concedes that, “We did come up empty with the last couple of ceos, […]