'The original "search engine"'. What you're missing is what "search engine" means to the general English-speaking population. Google is a search engine. There'

'The original "search engine"'. What you're missing is what "search engine" means to the general English-speaking population. Google is a search engine. There's nothing about a digital library catalogue anywhere in that sentence. The comparison being made is between looking up information in a card catalog in an institution created to serve the public interest, or asking your query of the world's largest advertising company.