He began designing a self-teaching program that could help people to recognize microexpressions that might otherwise only be perceptible when slowed down in a video.

接着他开始着手设计一个能帮助人们识别自己的微表情的自我教学程序，这些微表情原本只有在慢速播放的视频中才可能观察到的。

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Think of it this way: if we took one-thousandth of a second of footage from the femto camera video output and slowed it down to the speed of 30 seconds per frame -- the approximate speed of a standard TV broadcast -- it would take us a lifetime to watch.

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Unlike the data we use to surf the Internet and check our e-mails, which can be slowed down and not affect the results, streaming video services need to be able to stream at a certain data rate and while some dropped packets can be tolerated, at some point the movie becomes jerky on the screen, and sometimes entire sections drop out.

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We might have detected a hint of lagginess as compared to our Roku HD-XR here and there, but we were jumping out of channels and video pretty fast while we were testing -- when we slowed down to a more real-world usage pattern, things were quite responsive.

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