It’s almost impossible to tell if a playing card is marked.
But if you take ten cards and riffle them, you can tell instantly. The changes from the back of one card to another jump out at you.
It’s difficult to tell where we are if we only have a few data points–sooner or later, anywhere feels normal.
The key question is, “compared to what?”
On the other hand, if all you’ve got is all you’ve got, comparing it to something else might only create regret.