NFL To Have“Scientific”Season In 656of their offensive and defensive, But with all the scientific aids.The electronic signal-calling systems developed by the ClevelandBrowns and Chicago Cardinals arejust two of the tools that promise to give the Natioml FootballLeague its most “scientific” season in 1956,The Browns have developed aone-way radio to call plavs for theirusedmoves against Cleveland last Sunday.Cleveland also hopes to install a radio in the helmet of its defensive captain.Trading FilmsThe league has another project which promises to make things tougher for each club this year. The teams are trading game films with their rivals.NFL teams have been using films for many years to studytheir own errors. Now they willbe able to study the moves andplays of their rivals more minutely than a scout ever could.However, this plan doesn't figure to put scouts out of jobs.Scouts should became even more quarterbacks The Cardinals valuable. They now can concen-what they call a high gain trate on studying individual nmn-work and study, luck still figures to play a big part in the way the gnmes come out. The coaches and players who call a play that works! perfectly against a defense to which the opposition switched just, before the ball was snapped will look like geniuses. They'll looklike bums if a sudden defensive switch stops the play cold.NFL clubs- like the top-notchcollege teams, really have no set defenses any more. They Jump around like mambo dancers to confuse the offense.This week's selections:Saturday night: Browns overSteelers at Pittsburgh; Eagles over Redskins at Philadelphia; Colts over Lions at Baltimore. {Sunday: Bears over Packers at i Green Bay; Forty-Niivrs overhearing aid. operating from a wire nerisms, movements and stances Rams at San Francisco; Cardi encircling the field, to call some of players. nals over Giants at Chicago,