Why can humans do better at assessing the relvance of a website than search engines?

Question

Why can humans do better at assessing the relvance of a website than search engines?

Answer 1

Because search engines can only scan individual words or phrases, and have no clue about "context"

For instance, say you want to search on snakes, and do a search for "Python".

You'll get flooded with tens of thousands of irrelevant sites, because the search engine thought that a "Monty Python" was a type of python.