If we only remember the phrase 'we never know,' there won't be any interesting speculation, and we won't even know who will win the title.
Even though we always keep in mind that football can be unpredictable sometimes, we can still be surprised by the outcome. Take the CWC final, for example, some Chelsea fans believed they could win the final, but they were still surprised when it happened. It goes on to show that interesting speculation will always happen, no matter what.
Some will say Chelsea will likely maintain their best record against PSG, but it won't be that easy, and I'm confident PSG can beat Chelsea if they have the chance to meet in this Champions League match.
If they meet again in a game of two legs, I believe PSG has a higher chance of knocking out Chelsea.
Too much meaning has been read into the PSG loss, but I don't see a need just yet. It happens. No matter how good a tea is, it can still be beaten. Pep's Barcelona is arguably the best team in the world, and yet they lost important games; it's normal. There will only be a problem if the loss affects their form, and I don't think it will.
The fact that PSG were in top form the previous season, and they are entering the new season with good form, doesn't mean they will retain the Champions League. I said it before the season that they won't retain the season.