The Argus system is more than just a simulated task environment. Argus features flexible experimenter control over cognitive workload, as well as extensive data collection and data playback facilities to support the iterative nature of research in complex behaviors. In addition, embodied computational models interact with Argus using the same interface as do human subjects. Argus has been used to leverage understanding of effort/accuracy tradeoffs in HCI (see Argus Prime), gain deeper knowledge and hypothesize mechanisms associated with task switching and dual task performance (see Argus Prime), and as a tool to test judgment and decision making in time pressured environments (see Decision-Making Argus Prime).