Jacob was sitting in the break room, apparently lost in thought. His eyes, half closed, faced the wall. His hands were placed on the table. His fingers moved slightly,like a typist finding home row without looking at the keyboard.

Vanessa looked up from her magazine to watch Jacob. What a slacker that kid was!

"I heard you went to MIT," she said.

"I did," he said, and stifled a sigh. He could guess where this was going. Vanessa was an empty nester who worked at Whole Foods more out of boredom than anything else. Jacob could understand that much. But her tendency to mother the younger crew members was annoying.

"So...what are you doing here?" she asked. "I bet you could be doing great things, if you just applied yourself."

Oxygen toxicity is a condition resulting from the harmful effects of breathing molecular oxygen at elevated partial pressures. Severe cases can result in cell damage and death, with effects most often seen in the central nervous system, lungs and eyes.

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