I think you have a problem with definition of "finite". Is finite, say 10am to 2pm i.e. 4 hours. What if, this is stretched to 5 hours? Is that by your definition " infinite" ? Obviously it isn't.
Furthermore, there are many clips of players "messing around" doing things like nutmegs or crossbar challenges. Is this part of your "finite" training program? There is a massive gulf between something being strictly "finite" and infinite.
No-one, as far as I am aware, ( and certainly not me) claims to know more about football than Poch. However, even Poch has admitted that there is always room for improvement and he is constantly striving for perfection. Therefore, he himself is not averse to learning. Others have different opinions on various matters. The sign of a great manager is that he continues to listen, learn and adapt. It could be argued that Wenger's recent failings are that he has stopped listening and learning and continues in his stubborn ways.
That Poch is prepared to continue to strive to improve is to his great credit and makes him the manager he is. Ghod forbid he stops listening and becomes like Wenger. The only thing I can think of that may potentially make this happen is if everyone tells him he is right about everything and, on any SWOT analysis, the "W" column is left empty.
Football is about opinions, it is not an exact science and no-one has all the answers.