with the 3 goals that Tottenham got I thought it was safe, but their weakness and concentration just disappear
I do think that the most significant contributor to the weird results this season is the lack of a pre-season. Players aren't quite up-to-speed yet, and some teams seem better prepared than others. Having said that... the ridiculous loss of concentration by Spurs is likely due to the absence of a crowd as well. Nothing focuses the mind like tens of thousands of people yelling at you. All they had to do was go ten minutes without conceding 3 goals.. and they couldn't manage it! In a normal season, this isn't going to happen.
Aston Villa was lucky enough to score a goal in 90+1 minutes.
Villa is a strange case. They did buy well during the summer, but if we look back to the end of last season after the restart, they did really well. Their first season back in the prem, they bought huge numbers of players, and it obviously takes time for them to gel together. Add to that, they had a lot of injuries to some top stars. I think their position of just being good enough to survive was more reflective of this than anything else - the quality of the squad was better than it appeared, and once the season restarted, they were more of a cohesive unit, as exemplified by their much improved defence... from porous to rock-solid. So now, this season, they have fewer injuries, the squad has had time together, plus those new signings. I think we are looking at top 10 for them this time around.