Opinion Perplexity offers several advantages over Google as a search engine, making it a compelling alternative for many. Back in the 1970s, when this columnist was a happy teenage graduate student, I started my first business: Researchers at Large. I was one of the first people to make a living by being able to get answers from early search tools such as OCLC, NASA/Recon, and Dialog. Later, I used the early internet search services like Gopher, Archie, and WAIS. Then, I became one of the first ...