It's important to distinguish between information that falls into your lap and information you have sought. Understanding how information is produced and promoted will help with this question.
How much do you know about filter bubbles?
How does your search history and browsing habits affect your Google results?
How do your social media habits (what you like, follow, etc.) affect what appears in your feed?
How often do you purposefully seek out and review information that would fall outside of your common searching and browsing realm?