frames are blurred in movies, films, and even tv shows...

why do you think if you pause it... ITS BLURRY?

seriously...

http://en.wikipedia.org/wiki/Frame_rate

read down... its not a lot but its enough that makes it seem fluid

CRYSIS has blurring which lessons the fact that its fewer fps then you would have in other games

turn motion blur on and off in crysis at 20 fps and see which looks more FLUID