Easter eggs are hidden features or messages, inside jokes, and cultural references inserted into media. They are often well hidden, so that users find it gratifying when they discover them, helping form bonds between Google and its users. The easter eggs are sometimes created by employees during their 20% time. Google avoids adding easter eggs to popular search pages, as they do not want to negatively impact usability.
Huafeng (Hua) Zhang
Everyone has their own Pi, irrational by nature.