—— 请按键盘 空白键 开始游戏 ——

"Memory is a strange thing. It doesn't work like I thought it did. We are so used to thinking of it as a camera or a tape recorder, but it's not like that at all. It's more like a painter. It creates a picture, but it's not always the same picture."
数学不是关于数字、方程、计算或算法的:它是关于理解的。