http://www.marinij.com/business/ci_18035982
In 1993, Mill Valley attorney and outdoor enthusiast Tom Cohen backpacked for several days with his wife on the John Muir Trail in the Sierra Nevada. He enjoyed the trip but there was one major annoyance — a heavy-duty plastic food canister, required by federal park rules to keep out hungry bears.
"It was such a pain to stuff that thing into my backpack every day," he said. "When I got to the end of the trip I said, 'I'm never doing that again.'"
Five years later, he designed a Kevlar fabric sack that weighed just 8 ounces, less than a quarter of the weight of many canisters. He called it the Ursack, and over the past decade he has sold more than $1 million worth — 15,000 to 25,000 sacks — to backpackers eager to lighten their loads.
But Cohen is struggling to distribute the sack in some of the nation's most popular hiking locations, including the place where it was inspired. Citing failed tests with bears, federal parks officials have refused to add the Ursack to a list of containers approved for Yosemite National Park and other nearby parks, setting off a protracted legal battle....
The cure for a fallacious argument is a better argument, not the suppression of ideas.
-- Carl Sagan