They want to compress the information -- they just want to send the changes, what's new in the image, and so on -- and that is how your eyeball is able to squeeze all that information down to your optic nerve, to send to the rest of the brain.
人们想要压缩信息—— 人们只想发送新发生改变的图像，诸如此类—— 而那就是你的眼球如何 能把所有捕捉到的信息传送到你的视神经 再传送给大脑的其余部分