That has more precedent - in both Eastern and Western folklore there's a belief that a vampire was compelled to count and could be distracted by scattered seeds or a bag of rice.
Obsessive compulsive counting is a lot more believable than being confused by intersecting lines. By that show's "logic", # should make vampire heads explode.
"Maths! My one weakness, how did you know?!"
That has more precedent - in both Eastern and Western folklore there's a belief that a vampire was compelled to count and could be distracted by scattered seeds or a bag of rice.
Obsessive compulsive counting is a lot more believable than being confused by intersecting lines. By that show's "logic", # should make vampire heads explode.