CW@50 - Celebrating 50 years of British technology innovation
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Previously, we have explored a century and a half of British innovation in networking, and learned how one company – going by various names before eventually settling on BT – sat at the core of the first telegraph networks that connected Britain to the world, just as it sits at the core of the modern fibre network that accomplishes the exact same task.
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But what we have not yet examined is the story behind how that network is used, as the basis for an invention that in human history is probably comparable to agriculture, the wheel or writing: the internet.
In the popular imagination, the internet ‘began’ in 1991, and CERN scientist Tim Berners-Lee takes the credit. This could not really be much further from the truth; Berners-Lee invented the World Wide Web, which is actually the space on the internet where documents formatted in hypertext mark-up language (HTML), known more popularly as web pages or sites, reside and are accessed. This is very important, and without it, modern life as we know it would be unimaginable – but it is not really the internet.
The roots of the internet actually go back to a few years before Computer Weekly, and one of the foundations of the internet lies in the UK, at the National Physical Laboratory (NPL) in Teddington, south-west London, where scientist Donald Davies independently hit on one of the core concepts establishing the internet in the early 1960s.
Davies – who back in the 1940s was said to have found a number of errors in Alan Turing’s work, much to Turing’s irritation – based his work on the idea that computer network traffic was chatty, marked by long silences followed by sudden bursts of data, as opposed to the always-on nature of telephone traffic.
It was Davies who coined the term packet switching for the concept of dividing this data into little packets that could be send independently, and not even necessarily over the same path, to their destination. His work at the NPL, along with that of other pioneering computer scientists such as Len Kleinrock and Paul Baran, fed directly into the creation of the US military-owned Arpanet at the Advanced Research Projects Agency (Arpa).
One idea, many internets
Cisco fellow and engineering and network scientist Fred Baker takes up the story to walk us through the net’s early days in the 1970s, when a number of research scientists worked on competing protocols, giving rise to something of a problem.
“A whole bunch of work went on in that context developing the concepts and decided what in the world this internet thing actually was,” says Baker. “Guys like [3Com founder] Bob Metcalfe worked on similar concepts at Xerox and came up with Ethernet, for example.”
“Everyone was trying to come up with a network architecture that would allow them to lock in their customers, so that, for example, if you wanted a Xerox workstation, you needed a Xerox network.
“This was actually kind of amusing to watch, because whenever anybody came up with a good solution to a problem, suddenly everyone else would need to solve it, too. It was just a whole teetering, tottering mass of features.”
Although Arpanet was switched on in 1969 – famously falling over midway through transmission of its first-ever message – Vinton Cerf, another of the fathers of the internet, holds that the internet itself really only got its start in 1983, when his work on the transmission control protocol (TCP), which he first showed to the world in 1973, came to fruition.
TCP was developed jointly by Cerf and colleague Robert Kahn in an attempt to solve exactly the problem described by Baker, that there was no common language and too many communications protocols, which meant there was no easy way for different networks to talk to each other.
Further down the line, Cerf split TCP in two parts, one of which was named internet protocol (IP) in order to facilitate the transmission of real-time data, and it was the joint TCP/IP standard that was eventually to become the base on which the 400-odd Arpanet hosts would be migrated. This switchover occurred on 1 January 1983.
“When the day came, it is fair to say the main emotion was relief, especially among those system administrators racing against the clock,” Cerf wrote in a 2013 blog post marking the 30th anniversary of the TCP/IP switchover.
“There were no grand celebrations – I can’t even find a photograph. The only visible mementos were the ‘I survived the TCP/IP switchover’ pins proudly worn by those who went through the ordeal.”
With the expansion of access to Arpanet heralded in 1981 when the US National Science Foundation (NSF) began to establish dedicated links for academic computer sciences departments, the future of what was to become the internet was assured.
By 1986, at which point Cisco’s Baker was lead engineer on experiments exploring satellite Ethernet switching at Vitalink Communications, a new player had emerged: Al Gore was inspired to develop the concept of the information superhighway by his father, Al Gore Sr, who as a US senator in the 1950s was instrumental in the development of the interstate highway system.
Gore, who is often unfairly mocked for saying he ‘invented’ the internet, something he never claimed, had the political nous and clout to bring together these disparate university and research networks onto what was, by now, called NSFNET. By 1988, says Baker, more than 170 universities were connected to it and it experienced its first episode of “congestive collapse”.
The transition from Arpanet and NSFNET to the internet as we know it cannot truly be accurately dated, because essentially, both of them were the internet. However, over the course of the late 1980s, the increasing dominance of NSFNET, and the beginnings of commercial usage as it started to expand outside of academia, saw it come to dominate and supercede the Arpanet. If one must settle on a final date, it was probably in early 1990, when Arpanet was switched off, and Vinton Cerf wrote its eulogy.
“It was the first, and being first, was best,
But now we lay it down to ever rest.
Now pause with me a moment, shed some tears.
For auld lang syne, for love, for years and years
Of faithful service, duty done, I weep.
Lay down thy packet, now, o friend and sleep.”
But the Americans didn’t have the development of the internet all their own way. Back in Britain, and back in the 1970s, Post Office engineer Sam Fedida developed a video text system that in many ways predicted exactly what the internet would become.
The system, called Prestel, consisted of a TV set connected to a dedicated terminal that received information over a copper phone line. Sounds rather familiar.
Prestel also enabled users to access Telecom Gold, an early BT-backed email service, to which Prince Philip was an early subscriber. In 1985, his emails were famously hacked by two technology journalists, Robert Schifreen and Stephen Gold.
However, as there was no actual law against hacking at that time, the two men were charged under the Forgery and Counterfeiting Act of 1981 with forgery that deceived a ‘non-human target’. The conviction was later quashed by the Court of Appeal on the grounds that the ‘false instrument’ crucial to Schifreen’s conviction had technically been made by a computer, and not Schifreen himself.
Ultimately, this led to the Computer Misuse Act of 1990. Schifreen, incidentally, still works as an IT writer, as well as running an IT security business and lecturing in cyber security.
Unfortunately for Prestel – although it found a ready and enthusiastic audience among travel agents, who used it as a booking system – it bombed among consumers, mostly, according to BT archivist David Hay, because it was overpriced and under-marketed. It was shut down in the 1990s.
Read more about Computer Weekly’s 50th anniversary
- As Computer Weekly prepares to celebrate the 50th anniversary of our first edition in 1966, we look back at 50 years of British innovation and development in mobile networking.
- Launched in 1966 as part of a modernising wave to change British society, Computer Weekly battled for the nation’s industry against the US, and saw IT as an entry ticket to the Common Market.
- From ICL to ITIL: Here in the UK, a number of highly influential standards emerged that have become building blocks for the modern computer industry.
- Storage – From punched cards to flash and the cloud: Since the launch of Computer Weekly in 1966, we have moved from a world of punched cards and paper tape to one where flash and the cloud have revolutionised data storage.
- As Computer Weekly prepares to celebrate its 50th anniversary this September, we take a look at how government IT has changed over the years.
However, its influence was to rear its head again 10 years later, when Prestel became the subject of a court battle over the intellectual property (IP) rights to hyperlink technology.
“We still had the patent rights,” says BT’s Hay. “In 2000, the patent was still active and BT tried to claim IP rights to hyperlink technology in the US on the back of Prestel.
“In the event, it wasn’t successful, but had we won. In theory, we could have claimed a royalty every time a business or an ISP – not a consumer, because we always said we would never go after consumers – used a hyperlink, which would have made things a lot easier for BT.”
And, of course, as we have already touched upon, the internet was given a massive boost by the work conducted at CERN by Tim Berners-Lee when he created the World Wide Web, gave it to the world for free, and made the online world we know today possible.
We all know what that world looks like. Together, the internet and the World Wide Web have enabled a whole new economy and driven disruptive and innovative business models, caused an economic boom and an economic crash, and, from a social perspective, have brought together people from around the world in shared enthusiasms (and shared antagonisms), and even forged new marriages and families that would never have happened without them.
Talking of marriage, there is another aspect of life that the internet has changed.
The internet is for porn
One often overlooked trend in the evolution of the internet has been the impact of the adult entertainment industry.
Sex and technology have long gone hand-in-hand. Almost as soon as the Victorians perfected the camera, people were taking their clothes off in front of its lens, and just as video recording medium Betamax failed in no small part because pornographers backed the rival VHS standard in the 1980s, so this powerful, lucrative industry helped dictate the evolution of the internet. After all, as the cast of hit Broadway musical Avenue Q sang: ‘The internet is for porn.’
Actually, the adult entertainment industry is an excellent gauge of just how far we have come. Consider the 1990s, when it allegedly took whole minutes to download one indecent image, and compare that to 2016, when anyone with a superfast broadband connection can stream high-definition pornographic video with no problem whatsoever, something that was barely imaginable in 2000, let alone 1966.
Creative destruction, and the future of the network
Adtran CTO Ronan Kelly sets out this trend in more family-friendly terms, describing the evolution of the internet as a process of “creative destruction”.
Just as faster internet brought easier access to pornography, forced much of Soho’s sex industry out of business, and helped kill off VHS tapes, so it played its part in the decimation of the music industry and the rise of services such as iTunes and Spotify, says Kelly.
Alternatively, consider its impact on the publishing industry. As the internet comes to dominate, we have seen a frantic search for new business models by the owners of venerable newspapers such as The Times and The Telegraph, the rise of clickbait ‘infotainment’ websites such as Buzzfeed, or even Computer Weekly’s transition to an online-only title back in 2011.
And so we come full circle. As mentioned above, the network has become an essential, pervasive element of all of our lives. It has, to paraphrase former Cisco chief executive John Chambers, become instrumental in how we live, learn, work and play.
Will this continue? Without a shadow of a doubt. The internet was transformed by the web, then later file-sharing, video and voice. The latest transformative trend, says Cisco’s Fred Baker, is the internet of things (IoT).
During the course of his career, Baker has seen the internet move from a niche element – he recalls describing his job in the 1980s as “teaching computers to talk to one another” in an attempt to demystify something most people found frankly baffling – to something with which we can all interact with ease. The internet is both pervasive, and very familiar to us all.
“If anything,” concludes Baker, “the internet will become like background noise.”
But as we know, familiarity has a tendency to breed contempt. The internet, and the networks from which it sprang, are a source of immense power in the world today. A force for good, indubitably, but capable of immense harm in the wrong hands. The internet needs careful stewardship, and protection from those who want to control it. We forget this at our peril.