In the era of chunky computers and neon-lit dreams, the geekiest of pioneers, Vint Cerf and Bob Kahn, had a vision for a network of networks. They teamed up with the Department of Defense's Advanced Research Projects Agency (ARPA) to create ARPANET, the precursor to the Internet. On a fateful day, ARPANET made the switch to TCP/IP, the Internet Protocol, forever changing the game. This bold move unified a fragmented network, allowing different computer systems to communicate seamlessly. The cat was out of the bag – the modern Internet was born, and it would never be the same!