A binary decision is a choice between two alternatives, for instance between taking some specific action or not taking it.
Binary decisions are basic to many fields. Examples include:
Truth values in mathematical logic, and the corresponding Boolean data type in computer science, representing a value which may be chosen to be either true or false.
Conditional statements (if-then or if-then-else) in computer science, binary decisions about which piece of code to execute next.
Decision trees and binary decision diagrams, representations for sequences of binary decisions.
Binary choice, a statistical model for the outcome of a binary decision.
