What can I tell you about
spiders? Spiders have eight legs. Spiders' legs need vascular pressure to
straighten. Their natural, relaxed state is bent. That's why their legs curl up
when they croak.
We’re supposed to like spiders.
Spiders are good. Spiders eat bugs that bug us. Spiders recycle sewage into
rainwater. Spiders give us spider honey and spider silk. Spiders make friends
with barnyard pigs.
But. Only. There's a
spider-shaped set of linked cells in the visual cortex. Linked by a web of connections
all the way down to the part of the brain that's left over from when we were
the size of shrews, running around under the feet of tyrannosauruses. The
spider-shape triggers that spider-shaped set of cells, which sends a spike of
action potentials (if you could detect them with a Geiger counter the clicks
would blend together in a hum)—sends that spike signal down into the shrew
brain, and the shrew brain says, "Squish it! Squish it NOW!"
You can override it. Your big
folds, Mr. Cortex Guy, they can override the squishing reflex. Tell you that
the spider is your friend, etc., etc., blah, blah. The cortex does drone on a
lot. Can let you look at pictures of wolf spiders with all their hair and rows
of black, beady eyes staring at the camera. Lets you pet tarantulas, if you're
the type that pets tarantulas. But underneath, your
shrew-monkey-cretaceous-mammal brain is screaming, "Squish it squish it
squish it squish it now before it
kills you!" Because the little shrew-monkeys without arachnophobia all got eaten by spiders. Only the others
reproduced. Or reproduced more.
Eventually it causes problems,
this dissonance between the outer and inner brain parts. Makes your eyes start
to vibrate. Makes you squish other things, since you can't squish the spiders.
There was an arachnologist once who got arrested for squashing all the
kiwifruits at the Safeway. "They were looking at me," he said as they
hauled him away. "All furry, with their beady little eyes. Had to squish
'em before they sprouted legs. Once they do that, they crawl into the heating
ducts and you can never get 'em all out."
I know this about the
shrew-monkey brain because it happens to me. The side of the house is
Spiderville. Spider City. Especially toward the end of the fall. They're
orb-weaver spiders, mostly. Big webs that look just like your textbook,
comic-book spider webs. The owner hangs upside-down, right in the middle.
I was out there one night last
fall, poking around in the bushes and spider webs with a flashlight, looking
for the breach where some itchy little squirrels were getting into the walls and scuttling
around. I felt something on my arm. It was a spider. Big, fat
spider, abdomen the size of a grape, where you could see stripes and segments,
see the row of little holes the spider breathes through—spiracles?—in the
small circle of light from the flashlight. Feel the touch of eight brushing
legs. Feel, I swear, the prick of venomous fangs testing my skin for the tenderest spot. I shuddered. For real, and
I'm not a shuddering kind of person. Shuddered, flailed at the spider. Brushed
it off, and my shrew brain had me stamping on it over and over in the rain.
I'm sorry now. A little bit. But
my shrew brain keeps telling me I did the right thing.