I had been faced with this several times before. But this time I decide to ask it in a Meta post. I typed this phrase in the search box of the PSE:
"What is the field in the physics really?"
You can see the results here.
The question with exactly similar title is the seventh one.
Then I typed the same phrase in the Google search box. You can see the results here.
As you can see, the same question with exactly similar title belong to PSE is the first one.
I wonder why does Google search PSE's own pages, better than itself?