2. How did they know what they were looking for?
3. How did they know they were correct?
I gave answers to them then. However, yesterday something else occurred to me about the second question. Why did she assume one has to know what one is looking for in order to find it?
Maybe it is partly her age and experience. Being a teenager, searching on the Internet became a common activity before she was born. She likely does it a lot. For that activity, one does need to be aware of what one is looking for in order to find it. Sometimes when one is looking for something quite specific, one has to already be aware of exactly what one is looking for. Else the search engine returns can overwhelm what one is looking for. What you are looking for will be buried deep in the stack and thus hard to find. Whereas using optimal search terms will put what you are looking for at the top of the stack or close thereto.
This may seem like an insignificant point. However, it is more significant from a philosophical perspective. It is an aspect of Empiricism. Experience shapes and limits knowledge.