New top story on Hacker News: Ask HN: Is 'search' a solved problem?

Ask HN: Is 'search' a solved problem?
14 by search_ | 4 comments on Hacker News.
I remember the time (not so long ago) when 'search' seemed to be the hottest topic in the industry. We had the rise of Google and competitors. There were search startups. Open source projects like Lucene and Solr were in the news. There were books published, blogs, conferences.. And now it seems that the industry have moved on. There is a million papers/books/blogs/online courses/video lectures/meetups about ML/AI, but I can't seem to find anything current on search. What are the good resources to learn the fundamentals of search and keep up with the current happenings in that space? Not SEO, but more from the computer science/engineering point of view?