"I'm too picky, man," I said. "I can't seem to meet anyone who connects with me."
"Look. Girlfriends are like HEPA filters," he asserted.
I looked up from my beer and chuckled, maybe rolled my eyes. Carl's always got some crazy analogy he's trying to stretch, though I listen because somehow they all make sense.
"I'm serious."
"Okay, okay. How so?"
"Take your standard one-one-thousandth micron HEPA filter that you stick in the wall."
"Okay."
"You circulate the air but damnit, the place still reeks of fucking dogs. Why is that?"
I shrugged.
"No, come on, why is that?"
"I don't know."
"It's because the size of the dog smell molecules are bigger than one-one-thousandth of a micron, so they can't get through." He made an "O" with an index finger and a thumb to illustrate.
"Alright."
"Now, take your deluxe multi-layer HEPA filters."
"Uh-huh."
"That has the five-micron filter, your notable two-point-four-micron filter, then beyond that the one-micron filter."
"Mmm."
"Then finally, in the middle of all that, in the centrifuge where everything comes down to, at the end of it all, you have the one-one-thousandth micron filter." He drew a centrifuge in the air and squinted.
"Okay?"
"This way you catch all the various particles and molecules, of different sizes, and finally you are able to rid the room of that dog stench."
"Right. And this is related because—"
"Because finding a girlfriend is like the HEPA filter with the multiple layers. You have to broaden your scope enough to include everyone who may interest you, despite whatever flaws they may have at first glance, and you filter that down until eventually you find the right person. If you only use the one-one-thousandth micron filter, it'll never work."
"Ahhh," I responded, and wondered if I should be replacing the HEPA filter on my vacuum cleaner. The thing doesn't even have a centrifuge, I think.
from "In Exchange" by John Wang, Juked.com