The 21st century has been declared computer age.
But computer was developed long ago, so why wasn't the 19th or 18th century declared computer age.
It simply means that the full potentials of the computer, is been harnessed in the 21st century.
Do you have a computer? If no, then you need to get one, in other not to be a century behind.
This is the age that many things are happening to our own surprise