O'Reilly logo

Behavioral Mathematics for Game AI by Dave Mark

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Value vs. Utility vs. Marginal Utility

As we discussed earlier in Chapter 7, the notion of “value” is generally linked to something concrete. However, “utility” is usually somewhat more ephemeral. Even something as simple as a $20 bill has a somewhat amorphous utility. Its value is based on the two and the zero emblazoned on it for all to see. Its utility can be more of an “eye of the beholder” function, however. What makes marginal utility tick, however, is that the beholder himself can change his perception of the exact same value... much like me and my morning pop. As the perception of the value changes, the utility changes. The change from one point to the next is the marginal utility.

For instance, a starving person on the street would find ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required