Companies shouldn't buy into the idea that their mistakes will offer lessons for the future, according to Alex Bogusky, co-chairman of MDC Partners' Crispin Porter + Bogusky. "I've never learned anything from my mistakes," Bogusky said at an ad-industry event. "What about learning from your successes? That's where I've focused [my energies]. Like, this works, we better get down and study on this."