“Okay, class. Don’t forget, we have a test tomorrow,” Destiny announced. “Before you leave, can someone summarize natural selection?”

“Is it naturally to select something?” a student asked.

“No,” Destiny said. “Anyone else?”

Another student raised their hand. “Is it to survive in order to get fit?”

“So close,” Destiny sighed. “Anyone else?”

Nobody else raised their hands, and Destiny felt...