Chaosnet emerged from MIT's Artificial Intelligence Laboratory in 1975 as a decentralized local network designed for the Lisp Machine system. Unlike traditional networks with central control points, Chaosnet operates without hierarchy, connecting dozens of machines within a two-kilometer radius. Its name reflects the lack of centralized management, making it fundamentally different from ARPANET or other contemporary networks.

The system prioritized simplicity and high performance above all else. Rather than implementing complex algorithms, Chaosnet achieved speed by using high-quality transmission media operated in straightforward fashion. This approach proved essential for handling large Lisp programs efficiently while maintaining rapid interactive response. The network replaced traditional file disks in shared computing environments, demanding reliability that decentralized control provided.

Physically, Chaosnet uses coaxial cable segments called 'ether' with a maximum length of one kilometer. Each network node connects via transceiver and interface hardware to a computer running the Network Control Program. Packets contain up to 4032 data bits plus 48-bit headers for destination, source, and checksum information. Multiple ether segments connect through bridge nodes rather than repeaters.

Chaosnet drew inspiration from Xerox PARC's pioneering Ethernet work, incorporating concepts from multiple networking predecessors. The protocol influenced early local area network development but remained unsuitable for continental or satellite applications due to its focus on short-range, high-reliability communication. Its legacy lives on in modern Ethernet and distributed computing principles that prioritize performance through simplicity over centralized complexity.