Definition: Unpreempted, also known as unpreemptive or preemptive, is a concept in computer science and artificial intelligence that refers to a situation where an agent (such as a human) does not receive any instruction from its operating system or other external control mechanisms before performing an action. This means that the agent can make decisions without being explicitly told what it should do. In practical terms, unpreempted systems are those that have no means of receiving instructions from their environment to perform actions