While I did not hear the lecture, his advice is what many of us practice, and what I have done for years with no bear problems. The debate of hanging vs hiding has been debated here. A search of 'bear-proofing' will likely yield good results.

My system is that all food is in freezer ziplocs. The individual zips are in a plastic tote box. The tote box is in a plastic pack liner, which is rolled shut. The whole works goes in a pack with all of the straps cinched tight. Then it's wrapped in a plastic tarp & hidden. As a final touch, a bear alarm is set with a large pot or two.