人工造坡，有难受衬托着便捷

Surprise = Familiar Pattern + Violation of Expectation + Positive Outcome Uncertainty → Dopamine Keeps you coming back “just one more try” You might get something rare Slot-machine effect; intermittent rewards are most addictive Your prediction fails Keeps the brain learning and adapting

Illusion of skill 多邻国就是大量借鉴 candy crash的成功 www.youtube.com/watch?v=zsMr...

Completing a tech tree triggers a new crisis (barbarian invasion, climate disaster). 文明 的 特色，就是奖励或者危机又来了，就有了面包屑

不想浪费自己的努力，架势条不想没

紧张，怕自己的进展回退 进展可能回退，也可能快进