Black Bear or Grizzly?

Most people know that black bears are excellent tree-climbers, and grizzly bears are not.

It was recently suggested that this might be a good way to differentiate between the two species if I were to run into a bear.

The approach suggested upon encountering a bear was to immediately climb a tree.

If the bear climbed the tree and ate me, it was a black bear.

If the bear knocked over the tree and then ate me, it was a grizzly.