Every rule of thumb on earth in once place: RULES OF THUMB
FLEEING A BEAR
Bears can outrun, outclimb, and outswim a human. Your only hope is to run downhill. A bear’s center of gravity makes it difficult for them to run downhill.
If a laboring mother can talk about how painful the contractions are, she's in early labor. When she loses the ability to form sentences during contractions, she's in active labor.
You have to ask twelve people to find two volunteers.
When an assailant intends to take you someplace else by force from the place of first encounter, the odds of your coming back alive are very poor. So fight hard for your life as soon as you find out the bad guy has a change of venue in mind; it’s about the only chance you’ve got.