1965 is right Doc! He is a modern-football thinker, you, it seems, are less so!
'Formations' are the preserve of the media and fans who like to think they know what they are talking about. Formations are fluid in a 90 minute game of football and players have long been able to adjust accordingly. 442, 433, whatever, is merely short-hand for saying how many 'recognised' strikers/midfielders/defenders are on the pitch. Man Utd may well be playing a 4411 now instead of the 46 they used last season, but, really, Fergie is not bothered what YOU call it. HE calls it tactics, NOT formation.
Sure it's a subtle difference; but "Change The Formation" is a completely redundant call to improve a struglling side - change the tactics, attitude, approach, etc maybe, but 'formation' is just a label old-school managers, the media particulaly and many fans fall back on when they cant see ways to improve the play of the squad through decent coaching etc.
Styles of play have changed of course, but 'formations' have little use other than as a small part of in-game tactics. Although talking about their various merits make good copy and pub banter, it rarely effects the play of the team.
Any famous 'formations' through the years are based in propaganda as much as any supposed effect on the team....
...expect posts about 'wingless wonders' etc...