Pep is only human and is allowed to be tired or to make mistakes. He wants success more than the fans. It's his job and his life. It's not like he has decided to have a rest this season or to make experiments for the sake of it. He realizes that winning 4 league titles in a row is a unique opportunity. But the players are only human, too. Our problem is that we can't stay concentrated, which may be due to mental fatigue from last season. Or complacency. Also, we were probably a bit lucky with injuries last season. Now we aren't, and we aren't lucky in that the opposition scores from random chances or mistakes. We are going through a difficult period. The reason is not that Pep or the players are not professional enough. That would be a ridiculous complaint, given what they've achieved over the last 5-6 years.