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Aaron launched the third box at the camera, had to actually throw it to get it high enough. The camera exploded. Glass and plastic rained down.

“Open the—”

Aaron stopped mid-sentence.

He finally heard something.

Not an alarm, but a hiss.

What the fuck is that?

He searched for the source of the sound, realized it was coming from a rectangular vent halfway up the wall. The air around the vent warped his sight lines.

Something was leaking out of it.

“What the—”

Aaron gagged as he was hit by an awful smell, like rotten eggs.

Covering his nose and mouth with the sleeve of his shirt, Aaron stepped over the broken wood and glass and tried the doorknob again.

Itstillwouldn’t open.

Aaron’s stomach lurched and he coughed. His eyes watered and his chest burned. A fire ignited in his lungs.

“Let me the fuck out!”

Aaron gagged again, and this time, he wasn’t able to hold down the vomit that rose in his gorge. He was dizzy, nauseous.

He reached for the door, but missed and staggered forward.

His shoulder struck the wall and he rebounded, collapsing to his knees. He was coughing violently now, every inhale like breathing underwater. Every breath flooded his throat, but this did little to douse the intense burning he felt deep inside his core.

Aaron vomited a second time, and then darkness closed in on him.

?Chapter 2

Ivy Reeves glancedup at the students seated at their desks. She was only a few years older than most of them, but they all looked so young.

And lost. God, they all looked lost.

Ivy decided to go over it again, starting from the beginning.

“Bayesian statistics really isn’t that complicated. In essence, it’s the interpretation of probability.”

Blank, glassy-eyed stares.

Ivy sighed.

“You know how frequentist statistics relies on long-term frequencies and data?” She pointed at the digital display behind her, where the second of two peaks was bisected by a single line marked, “New Estimate.”

“Well, Bayesian statistics differs because it incorporates additional data into the data set to form new beliefs.”

She moved her finger to the first peak now.

“See how the estimate changes based on these new data or beliefs?”

Ivy’s eyes returned to her class, expecting to see arched eyebrows and slight smiles indicative of understanding.