AlmostThere wrote:An ursack, legally used.
Yosemite in 2013 it wasn't legal.
Regardless, it appears they lost their food due to an Ursack failure. But in a larger context it can also be seen as a failure of canisters. A canister's limited volume coupled with its bulk and weight discourages almost everyone, just like the people in that story, from carrying a second one. I'm not as pessimistic as you and hope to see the technology improve.
Bears can get into cars, because they can get their claws in. Bears can get into bags, because they can get teeth in. That ain't pessimism. It's pretty much the way it is.
I would love for there to be something light and soft sided that would work. If Kevlar/spectra doesn't work, what do you think will?
I missed the part where they weren't over the pass yet - but, the bears along the JMT are just as bad as the ones inside the park boundary, so it would have been chewed up just the same. No doubt they parked their tent in the same overused places everyone else does. The bears have a route.