Human Action Cycle for Set Phasers On Stun:

Goal: Give proper radiation treat to patient after his surgery for removal of tumor

Intention: Use Therac-25 cancer radiation therapy machine

Sequence of Actions: Place patient underneath machine

Go to control room

Enter commands into keyboard (e for electron beam)

Initiate treatment by pressing b for turning beam on

Actions: Same as above sequence, however she pressed “x” instead of “e” , pressed up, edits and reenters “e” then follows to beam ready, and presses b

World: Patient hit by massive radiation, error appears on screen of display,

Perception: Mary Beth sees the error on her screen but doesn’t see that patient is hit with massive radiation

Interpretation: Mary Beth thinks that machine hadn’t fired and tries to repeat the procedure again. (does this 3 times), She thinks patient hasn’t received treatment yet

Evaluation: proper radiation treatment has not been given to patient but Mary do not know what has happened in the room. Her goal is not met

Marking notes: Above is the best answer. Some may have different goals or intentions, as long as the cycle is followed through you will get full mark. 1 mark for each step’s label and description.