This morning’s Observer column…

In the old days, dates fell into one of two categories: BC and AD. Now the relevant categories are BG. and AG: Before and After Google. The critical date was 1998, when Larry Page and Sergey Brin launched their PageRank system for rating web pages. It was an epochal moment. No British child knows there was once a world without Google. In fact most would be astonished that people were able to get along without it.

Google is 10 years old today and it has celebrated by upsetting the world’s applecart – again…