—— 请按键盘 空白键 开始游戏 ——

神奇的数字七,加减二:我们信息处理能力的一些限制。
The magical number seven, plus or minus two: some limits on our capacity for processing information.
Silence is not the absence of sound, but the presence of an unspoken truth.
The best way to predict the future is to create it.
Machinery and labor-saving devices are only valuable as they serve to reduce the cost of manufacture.