The first question is how does it come up with the questions. Almost certainly the questions come from the millions that are user submitted to Google each day. The answer given is the answer one normally sees when Google thinks it has a good source for the answer. There is likely some filtering that uses questions/answers of certain approved web sites, such as wiki. I noticed some of the answers were old. For example there was a question that was answered with a quote from wiki, but the answer was wrong and that quote in wiki had been eliminated long ago.
Google workers are pampered alot. Right from pickup they are provided good technology as well as comfort. After entering their office they are provided with good breakfast. They have gym they have swimming pool to rekax. They can play games when biref. They provided all types of comfort.