To add to any analysis of the presence or lack of food, also consider how our food situation varies. For example this Friday I will start hiking in SNP where bears are very likely to be food conditioned AFAIK. BUT my food will be 100% sealed MH etc will very little odor and by the time I'm in Harpers I will be carrying several opened and used containers which will have nice smelly, aged food remnants(an argument for cleaning ALL containers) but little bear activity, which represents a greater risk? And how does such correlate with known bear attacks? Having food does NOT tell the full story of how it may or may not have influenced a bear attack. Its all in the details we rarely get.