Some people think "progress means fitness." Others think it means "a healthy lifestyle."

Some study specific topics or areas.

"Philosophy isn't for me. I'm a fitness guy."

"I'm not smart enough to study finance."

"Why do I need to understand politics?"

"I just want to live a peaceful life."

But you can't do that. Life is war. Sheep didn't want to learn and understand complex things, either. Now they're food.