I agree. Writing them down, video taping them or polorids you still have 3 guys sending signals 2 or which are bogus signals plus to be of any help you'd have had to be able to communicate the signals into the QB which from what I've heard would be hard to do with only a 15 sec communication window to send in the offensive play.
The non-advantage of film equal to writting down what's observed or polaroids?
Watch some girl walk across the street and write down everything significant you observe about her, then recall who within 20 yards of that person is wearing a hat.
You might get that on a polaroid, but if three guys tipped their hats at the same time, who was the lady looking at. Blow up the picture to get a better look at her eyes and the hat tippers disappear.
Now film the 10 second action, scan the street corner back and forth, do this a dozen times with the same hat tippers and lady. If she looks at tipper one she smiles ignoring the rest, tipper two she frowns and cluthches her bag, tipper three she hails a cab.
Hey, how does she know which hat tipper to take her que from to begin with, do the others give that away some how? Is there a fourth person sending a signal?
Check out the body language of the people on the corner, those in authority, sitting on the bench, the people crossing the street with the lady, where do they position themselves depending on whether she smiles or frowns.
Go over it slowly, forward / reverse.
Compare it with a dozen other tapes you have of the same lady, hat tippers and set of characters you've taped when they have gone through the same motions on different corners in the city. What predicatable patterns do you see emerge?
Likely a hell of a lot more than you would if you wrote it down or snapped polaroids of the action.
Does this analogy seem too ridiculous....I don't think so.
A skilled interpreter may not be able to hit the nail on the head 100% of the time, but he would be close.