• by Laurie Sullivan , Staff Writer @lauriesullivan, March 10, 2013

The head of Google Search Amit Singhal, senior vice president of search and Google fellow, talks with Guy Kawasaki, which just took the role of advisory at Motorola Mobility, about The Future of Google Search in a Mobile World at the South by Southwest conference (SXSW) Interactive on Sunday. The talk was scheduled with Android chief Andy Rubin, but he was quietly replaced by Singhal last week. Singhal jokingly came out and said he's been working on his tan.

The two talked about the basic algorithm for Google search, from inbound inks to using more than 200 signals to build a "perfect" engine, something like a Star Trek computer, and "that's what we're building today,"  Singhal said. The engine crawls 30 trillion Web addresses in more than 250 million domains. Some things on the Web are not accessible to Web crawlers. In the past 12 years since he started at Google, people searching the Web just expect it to work and return the most relevant information.