First sentence is true. Second is not, as is the third. I believe you don't know what you are talking about. A software engineer for example writes code that sc

First sentence is true. Second is not, as is the third. I believe you don't know what you are talking about. A software engineer for example writes code that scales across thousands of systems and might be (human) language independet. A SQR tests samples of searches if they match google quality standards. As this cannot scale across all websites it is done with a subset of the web, like a one in a million ratio. It has to be done by 5 people to get an average so it is independent from one rating = one result. And it has to be done in context to countries / cultures.