There is always research and analysis. But then when it all kicks off, against live opponents, its always different.
That will be part of the learning curve. What he had expected of Potter turned out to be contrary of what he thought.
Like Tyson, brilliant managers like Pep and Klopp struggled and had to go on a steep learning curve in their first 12-18 months.
One game tells us nothing about ETH. Or even one season.
This early in his tenure, his United has very few approaches or ways of playing. It will be easy for teams to suss us out at the moment. When he adds more options to his playbook then we will be more difficult to beat.