Citing the extremely low level of entropy present before a normal set of football downs, scientists from the NFL's quantum mechanics and cosmology laboratories spoke Monday of a theoretical proto-down before the first. 'Ultimately, we believe there are an infinite number of proto-downs played before the first visible snap,' lead NFL scientist Dr. Oliver Claussen said during a press conference, adding that the very last yocto-down is a by-product of leftover fourth downs from this universe, as well as those from a theoretical universe running along an arrow of time concurrent to our own. 'It is our goal to isolate this microscopic down using a highly volatile electron beam with a physical isolation resolution of 500 angstroms or better. If all goes well, we can make this down available, and NFL teams will have one more chance to attain additional yards, a new set of downs, or even score.' Claussen later stated that those in the field who talk of a fifth down after the fourth are only encouraging the practice of bad science. 