How Does Google Decide What to Show Searchers?

i feel like discover the articles that are presented to i know me and from my co workers and friends, the articles that they're served up. It's almost like google can anticipate what we want to click before we even know what it is. So the experience for eac person on gogll discover. I can't help clicking multiple times a day because there are things i need to know whether it's about a reality t v show or bob dillon's latest tour. Things i would never search, but are served up to me becauseGoogle somehow instinctively knows what i like and anticipates that.