“The edge” is a metaphor. Is used to evoke an image of pushing oneself to the point just before failure to achieve a goal, in other words, to the point just before falling off of an actual precipice?

My source material indicates and describes the “edge” in a very simple way. The “T”

is a word that indicates how most people are comfortable taking chances. What Farley calls a big T personality?

Why living on edge means living in a way that brings a lot of risk? Your document lists exemplary activities: “bungee jumping, skydiving.extreme skiing” among others.

The woman you quoted who likes to go “right up to the edge” could be a skateboarder who only tries to do some tricks. But because of her lack of education, she must have started practicing. What is the edge of what is safe. Why and how? If a person tries hard and tries hard on herself, she will feel a rush when she succeeds.

How do I find the phrase “on the cutting edge”?