Here's a test. This is my family on the trail near Rancheria Falls (Sierra 11 yrs old, Nevada 9 yrs old). Notice the cub near the trail. I didn't, I walked right past it while I was fiddling with my camera and my kids pointed it out.

What's a parent to do?
1. Have a seat and read Goldilocks to the cute little cub, maybe sing a few rounds of Cumbaya. If Momma Bear comes by, just smile and reassure her in bear speak that we are friendly humans meaning no harm to her offspring.

2. Look around to see which way is the best way to get out of the situation without coming between Momma bear and the cubs. Be willing to go back down the trail if necessary.