What is an Internet?

 There is no single or generally agreed-upon answer to this question, because the internet is different for each of us.
Some of the definitions of Internet are as follows:
•It is a set of computers talking over fiber optics, phone lines, satellite links, and other media.
•It is a place where you can talk to your friends and family anywhere around the world.
•It is a place to get cool game demos.
•It is a place to do research for your thesis or a business presentation.
•It is a place where "crackers" and other shady characters lurk, waiting to wreak havoc.
•It is unlimited commercial opportunity.
•It is a worldwide support group for any problem or need.
•It is a gold mine of professionals in all fields sharing information about their work.
•It is hundreds of libraries and archives that will open to your fingertips
•It is the ultimate time-waster.
•It is the technology of the future that will help make our lives, and those of our children, brighter.
•An electronic network of computers, which includes nearly every university, government, and research facility in the world. Also included are many commercial sites. It started with four interconnected computers in 1969 and was known as ARPAnet.
•A network of computer networks which operates world-wide using a common set of communications protocols.
•A global network connecting millions of computers. As of 1999, the Internet has more than 200 million users worldwide, and that number is growing rapidly. More than 100 countries are linked into exchanges of data, news and opinions.
•A global network connecting millions of computers. More than 100 countries are linked into exchanges of data, news and opinions. Unlike online services, which are centrally controlled, the Internet is decentralized by design. Each Internet computer, called a host, is independent. Its operators can choose which Internet services to use and which local services to make available to the global Internet community. Remarkably, this anarchy by design works exceedingly well.
•The Internet, or simply the Net, is the publicly available worldwide system of interconnected computer networks that transmit data by packet switching using a standardized Internet Protocol (IP) and many other protocols. It is made up of thousands of smaller commercial, academic, domestic and government networks. It carries various information and services, such as electronic mail, online chat and the interlinked web pages and other documents of the World Wide Web.
 All these answers are right, but none of them is complete. Today, the Internet is much more then it was a couple of decades ago, and in another five-six more years it will have grown so far that the cool toys we use today will be the ancient grandparents of the tools in use then.