The lecture hall at Imperial College London was steep.
Alex sat in the back row. He was wearing a hoodie, a baseball cap, and non-prescription glasses. He was trying to be invisible.
The professor, Dr. Aris, was talking about fluid dynamics.
"Bernoulli's principle," Dr. Aris said, writing on the chalkboard. "As the speed of a fluid increases, the pressure decreases."
Alex scribbled in his notebook. Speed increases, pressure decreases.
He smiled. That was football. That was the Hurricane. When Mark ran fast, the pressure on the defense dropped because they panicked.
"Hey," a whisper came from his left.
Alex froze. He didn't turn.
"Hey. Psst."
Alex looked. A student with messy hair and a coffee stain on his shirt was staring at him.
"Can I borrow a pen?" the student whispered.
Alex exhaled. "Sure." He handed over a pen.
