There was no controversy that Clark was schizophrenic and was suffering from the disease when he shot Officer Moritz. There was no controversy either that Clark actually believed that there were aliens who were out to get him, as he hung fishing line in his room as "booby traps" as well as wind chimes on the doors and windows to warn him of intruders. Lastly, Clark kept a bird in his car to warn him of different changes in air temperature, which he believed could lead to possible intruders.