Spot the Guy who knows nothing about football. The only vested interest a trainer (presumably he meant manager/coach) has in a specific formation, is whether it is effective. If he doesn't win games, he gets fired. Football supporters typically get most exercised over formations, and in their cult-like fervour for their teams, will insist, despite all contrary evidence, that there is One True Formation that their team should be playing......A medical doctor can use any valid therapy, they have no COI in respect of a specific drug unless they are a spokesperson or involved in trials, but an acupuncturist, homeopathist or whatever, gains tangible financial benefit when Wikipedia validates the false beliefs that underpin their business. A doctor who prescribes statins will change to another treatment if statins are shown to be ineffective. An acupuncturist has no obvious option other than acupuncture. It's like any other cult. An agnostic has no COI in respect of cults, neither does an atheist, but a member of the cult, does......It's like the difference between a 4-3-3 formation trainer, who has a vested interest in that formation, and a supporter of football, who won't care over much about the formation, only about the game itself. Guy (Help!) 01:26, 1 January 2019 (UTC)
Naturally there are managers who are committed to a certain philosophy, come what may. They clearly aren't motivated by their own financial well-being, but are trying to bring to fruition their own vision of Perfect Football. Not even the most successful football managers in the world have stuck with the same formation forever.
