- Why did the first ARPANET message end up being just 'lo' instead of 'login'?
- What made ARPANET's packet-switching architecture conceptually different from earlier networks?
- Which universities were connected by the original ARPANET in 1969?
Internet and Web History
The creation and growth of the Internet and World Wide Web.
- How did Ray Tomlinson modify SNDMSG to send a message to a mailbox on a different networked computer?
- Why did Tomlinson choose the @ symbol to separate a username from a host machine's name?
- What was the @ symbol commonly used for before it became part of email addresses?
- Why is it notable that the two computers used in the first networked email test sat in the same room?
- Why did Godfrey Hounsfield decline to patent his CT reconstruction algorithms?
- What role do undersea fiber-optic cables descended from TAT-8 play in today's internet traffic?
- What institutional memory problem at CERN was Berners-Lee actually trying to solve with his 1989 proposal?
- What did Berners-Lee build by the end of 1990 to turn his proposal into a working system?
- Why did Berners-Lee choose not to patent the Web, and what did CERN do with the rights in 1993?
- What did Tim Berners-Lee's original 1989 proposal at CERN describe, and how was it received?
- What three components made up the working implementation of the web by 1991?
- What architectural choice distinguished the web from earlier hypertext systems?
- What features did Mosaic offer in 1993 that earlier text-only web browsers lacked?
- Who created Mosaic, and where did they build it?
- Why did making inline images possible turn out to be the crucial missing ingredient for the web's growth?
- What company did Marc Andreessen go on to found after Mosaic?
- Why did Tim Berners-Lee decide not to patent the World Wide Web after inventing it at CERN?
- What problem was the founding of the W3C in October 1994 meant to solve as the web grew rapidly?
- How did the browser wars between Netscape and Microsoft later validate the reasons for founding the W3C?
- What made the World Wide Web the platform where Java actually found its audience?
- How did Sanford Wallace's company Cyber Promotions send unsolicited email at a scale servers couldn't handle?
- What legal argument did Wallace use to defend his right to send mass email?
- Why was spam economically viable once the cost of sending a million emails fell to nearly zero?
- How did Jody Williams coordinate an international campaign from a Vermont farmhouse in the early 1990s?
- How did PageRank use the structure of links between web pages to rank search results?
- Why did weighting each link by the authority of the page casting it improve on keyword-frequency search?
- Who provided Google's first investment, and under what circumstances was the cheque written?
- Why was Nupedia's expert peer-review process producing only a couple dozen articles a year before Wikipedia began?
- How did Wikipedia grow from a side project to feed Nupedia into a much larger encyclopedia on its own?
- What does Wikipedia's early growth suggest about unpaid volunteer collaboration at scale?
- What problem did Cerf and Kahn's 1974 paper solve for networks built on incompatible hardware?
- How does TCP ensure data arrives intact even when the network path is unpredictable?
- What made the end-to-end, distributed design of TCP/IP robust enough to scale from research machines to billions of devices?
- What did Tim Berners-Lee's original 1989 proposal actually describe?
- What technologies — HTTP, HTML, and the URL — did Berners-Lee build to make the web work?
- Why did Berners-Lee choose not to patent the World Wide Web?
- Why did it take 27 years for the Turing Award to recognize this work?
- What problem was Robert Metcalfe's original 1973 Xerox PARC memo trying to solve?
- How did Ethernet's collision-detection and backoff protocol let the network manage itself?
- Why did Metcalfe have to leave Xerox and found 3Com to get Ethernet widely adopted?