Arachnophobia especially easy. Like all traits, there is variability in the intensity of fear of spiders, and those with more intense fears are classified as phobic. Being relatively small, spiders do not fit the usual criterion for a threat in the animal kingdom where size is a factor, but they can have medically significant venom. However, a phobia is an irrational fear as opposed to a rational fear. By ensuring that their surroundings were free from spiders, arachnophobes would have had a reduced risk of being bitten in ancestral environments, giving them a slight advantage over non-arachnophobes in terms of survival.
Fear Clinic (film) attempt. Wandering through the building, Sara discovers Andover's records where he states that the creature is actually a manifestation of fear and that his Fear Chamber was effectively starving it of what it needed to survive: more fear. Andover is pulled into a strange cocoon-like structure on the wall, which enables the fear creature to take over his body. Meanwhile, Blake ended up succumbing to the influence of fear and becomes the shooter once more. He then proceeds to murder one of the clinic's employees while the fear creature incapacitates or kills several of the clinic's inhabitants through its influence.