Well, you go ahead and believe that then.Of course it's a science, just as any other sport is. Science has innumerable variables to contend with, which is why chaos theory is part of the scientific catalogue.
Coaching is a science, or do you think the way the likes of City and Liverpool play is because Pep and Klopp just bought a shitload of players and told them to "run araaaand a bit?"
There is science within the game, from the tactical setup, to the patterns of play, to the laws of the game. All systems put in place as a result of experimentation to achieve a desired end.
A rainbow is science, the aurora borealis is science, it doesn't detract from their beauty, just as the science doesn't detract from the beauty and diversity of the game.
You might not like or accept this, but that doesn't give you license to demean those that do.
It's your choice, but I'm sorry, I don't share your definition.
And I did say that there were aspects of science in the support of the game, but men kicking footballs is a sport and there are no laws, constants or replicable science based facts in an issue of personal skill and human endeavour. Otherwise every game would play out the same, there would be no losses to inferior teams and the scientific laws would dominate the human fallibility that we all possess.