Prof. W. Powell announced his newest webpage, “What is a decision?” covering these headings:

1)    What is a decision?
2)    What types of decisions are there?
3)    What does a decision do?
4)    We make decisions to solve a problem, but what do we mean by a “problem”?
5)    What are the decisions that we can make?
6)    How do we make decisions?
7)    “State variables” are fundamental in dynamic problems, but what is a state variable?
8)    What is the value of information? Link