every single game you have watched you see a master coaching move that influences the game?
And you have the gall to suggest it is I that is talking rubbish?
As for the analysis hardware, it for analysis of the game, mainly afterwards,to determine exactly what is going to plan and what isn't, and if you want to suggest any tactical moves made are due to all these hanger ons and their technology in the box, then that isnt down to one coach and his masterful, adaptable technical nouse anyway.
The game is so structured now, that is why you always hear ex, ( ex playerd dont have to toe any party line

) players always rattle on about it.
when things go to the crapper, there is little the coaches can do but try to get the players to execute what they have been instructed better. That is why, no matter what team,or what coach, when they are getting beaten and the TV cameras pan to the coach, they all have the same helpless look of dispair on their face.