Mistakes are made by every footballer in every football game no matter how high the level. Unfortuantely we only pick up on those obvious ones that produce a goal etc. In the grand scheme of things did it change anything? - no, we'd have got plastered anyway. As long as Purr is shown the errors in his decision making and can demonstrate a better alternative should the same arise in the future, he will become a better player for it.
We moan that to pass our driving test we have to drive like robots but in the real world its not practical, we're human. Why do footballers have to play like robots? - if it's the wage - that's not justification enough