How to use Cortana in Windows 7 or Windows 8?

We all know that Cortana is a virtual personal assistant available on Windows 10 PC. Microsoft has not yet released Cortana for Windows 7 or Windows 8 and many PC users are not able to get benefits of Cortana.

Chappie Robot: Is such AI possible?

Is it possible to bring an A.I. robot like Chappie to life? Chappie is a sci-fi movie directed by Neill Blomkamp of the District 9 fame which stars stalwarts Sigourney Weaver, Hugh Jackman and Dev Patel (star of Slumdog Millionaire.) The movie is based on the hot trending topics of sentient robots and artificial intelligence.