A reunion after (almost) 40 years

On October 12, a small get-together was held in the CAB building in honour of D-INFK founders Niklaus Wirth and Carl August Zehnder. Alumni, former employees and professors from the founding period of the department 40 years ago attended the event.

Ueli Maurer, Carl August Zehnder, Niklaus Wirth und Timothy Roscoe
Today's deparment managements meets its founders: Ueli Maurer (l.) knew Carl August Zehnder (2nd from left) and Niklaus Wirth (3rd from left) well during his time as a student and young professor at ETH Zurich. Department Head Timothy Roscoe (r.) told the retired professors about D-INFK as it is today. (Photo: Andreas Bucher)

40 of the first D-INFK alumni, former doctoral students and employees, as well as some of the first D-INFK professors, met on Tuesday, October 12, at the CAB restaurant food&lab to celebrate the 40th anniversary of "their" department. There, they also encountered the current D-INFK generation: representatives of student and scientific staff associations as well as some current professors.

Professors emeritus Niklaus Wirth and Carl August Zehnder attended the get-together as guests of honour. In a discussion panel, the department founders recounted how they, together with Peter Läuchli and Jürg Nievergelt, launched the computer science curriculum at ETH Zurich in 1981. The fledgling science faced significant resistance from other parts of the university. "People weren't against computers per se," Wirth recalls. "They just said that programming is something an engineer learns on the side and not an academic discipline." Originally, the founders wanted to introduce the degree programme as early as 1970. "The first opposition came from mathematics and physics," Zehnder says. "We were denied all kinds of things, including our status as a science."

Peter Ursprung, Zehnder's former doctoral student, was still in the mathematics department at the time and sat on the departmental council as a student representative. "We were discussing whether there should be a separate degree course in computer science. I fought for it, but my fellows and I were outnumbered. The majority was against it," he recalls. "On the 25th anniversary of the computer science programme, I ran into a mathematics professor from back then. He said he had been wrong to oppose it."

In his address, Department Head Timothy Roscoe also pointed out how much the tables have turned. The strong growth of D-INFK is just one indication of this, he said. "Virtually all other departments at ETH Zurich are now doing what we would call applied computer science," Roscoe stated. "And we're training them for it by offering computer science classes for other disciplines."

Prof. Timothy Roscoe
Professor Timothy Roscoe, current Department Head of D-INFK, showcased the growth and recent activities of the Department of Computer Science. "Many other disciplines do what we call applied computer science", he said. (Photo: Andreas Bucher)

After the discussion, the guests enjoyed an apéro – and, above all, a chance to catch up with old friends. "I was delighted to see my doctoral supervisor Jürg Gutknecht again – practically for the first time since my doctoral examination in 1988," says alumnus Matthias Wille. Professor emeritus Jürg Gutknecht was also pleased to reunite with his former doctoral students. "It was interesting to learn what kind of careers people have had after studying computer science," he says. Fredi Schmid, co-founder and first president of the Association of Computer Science Students (VIS), no longer works in computer science. "It was very exciting for me to dive back into that world and reconnect with old peers after more than 30 years," he says.

Many attendees were particularly pleased to see the department's founders. Director of Studies Ueli Maurer is also the longest serving professor at the Department of Computer Science. When he joined the department in 1991, he worked personally with Carl August Zehnder and Niklaus Wirth. "Zehnder held the department together, formed it into a team," he recalls. "He radiated a lot of warmth and always advocated for the cause. Wirth was the star, a highly recognised, internationally acclaimed scientist and Turing Award winner. When I was a student in 1979, he inspired me to write my first own program on punched cards in my free time." Many guests recalled anecdotes from their time at the department or gave their assessment of the state of computer science today. You can find these statements in the gallery below.

Ueli Maurer, Director of Studies, was somewhat intimidated by Niklaus Wirth as a young D-INFK professor. "I decided to use Wirth's Modula-2 programming language for my lecture to 400 students. When I told him this, he said, 'You haven't even looked at Oberon properly. Modula-2 is obsolete, you must use Oberon.' After that, though, we became good colleagues." (Photo: Andreas Bucher) Thomas Stricker (l.), former head of the Institute for Computer Systems, also remembers how strict Wirth was. "I was teaching computer science to electrical engineers and chose C++ for that, a language that Niklaus Wirth often criticised. He asked me to come into his office and explain myself. I succeeded: in the end, he said he could understand this decision for this specific lecture." (Photo: Andreas Bucher) Professor emeritus Jürg Gutknecht returned to computer science research thanks to Niklaus Wirth. "I was working as a middle school teacher when I came across a job advertisement from Wirth. His name was very well known. I stopped by out of curiosity and saw Wirth's computer Lilith with its window system. It fascinated me so much that I wanted to be part of it." From that day in 1981, Jürg Gutknecht remained at ETH Zurich until his retirement in 2014. (Photo: Andreas Bucher) Matthias Wille (r.) did his doctorate under Jürg Gutknecht (l.) and Niklaus Wirth (c.), but also remembers Carl August Zehnder well. "Mr. Zehnder was a formative figure at the department and represented it towards the school board. Niklaus Wirth joked that he would buy him a skateboard because he was on the go so often. Another time, he got Zehnder a periscope to look over the mountains of papers on his desk." (Photo: Andreas Bucher) Niklaus Wirth recalls his humorous gifts for Zehnder well. The two founders share a long friendship. The founding time was difficult, he says. "The school board promised me in 1970 that we could set up a computer science course. Ten years passed before it actually happened. During that time, I was repeatedly granted sabbaticals at other universities. Both myself and the department benefited from that." (Photo: Andreas Bucher) Carl August Zehnder (l.) took the jokes at his expense in stride. "I still have that periscope. We know each other very well, and such teasing never hurt me. In all other respects, Niklaus Wirth was the serious and thoughtful core scientist. I was more the politician who worked towards the acceptance and use of computer science. It always helped me immensely to have him and his knowledge on my side in negotiations and discussions." (Photo: Andreas Bucher) As a former doctoral student of Carl August Zehnder, Robert Marti (2nd from left) still remembers his supervisor and his interests well. "During the discussion, I recognised both Mr. Wirth and Mr. Zehnder right away, their manner and views have not changed. I sat next to old colleagues and we even recalled inside jokes from back in the day. It was wonderful to meet all the old acquaintances again." (Photo: Andreas Bucher) Fredi Schmid, here next to the current VIS President Emir İşman, started his computer science studies in 1982 and especially appreciated Carl August Zehnder's lectures. "When I came to ETH, I barely knew how to code. The level of most textbooks was too advanced for me, and, to be honest, so were Niklaus Wirth's lectures. Mr. Zehnder conveyed the knowledge in a very accessible way and I was able to learn a lot from him." (Photo: Andreas Bucher)
Nevertheless, young people could also learn a lot from Niklaus Wirth – and still can today. Rosmarie Müller (right), Niklaus Wirth's partner, says: "My grandson is 16 years old and has just started his apprenticeship. And lo and behold, his new place of work has a large quote from Niklaus on the wall." (Photo: Andreas Bucher) Karl Rege, one of the first alumni, is now a professor of computer science at ZHAW. He chose the new field of study thanks to Zehnder. "As a high school student, I visited the study information days of the University of Zurich and ETH. Mr. Zehnder's presentation convinced me to go into computer science. That's where I've been for a couple of decades now, and I still consider it to be the most interesting field. I would study computer science again in a heartbeat." (Photo: Andreas Bucher) Alumnus Marc Brandis (l.) never quite left the department: he is a lecturer at D-INFK. He, too, loves his subject. "I would definitely study computer science again, I'm passionate about it. When I was studying, there were three types of computer science students: those who were interested in math, those who wanted to make a career out of it, and the nerds who found computer science itself fascinating. I was one of the latter." (Photo: Andreas Bucher) Anne-Lene Groll (c.) joined the department in 1982 as a doctoral student. Although she ultimately decided against an academic career, she has fond memories of her time at ETH. "It was a very enriching time. After two years, however, I made the switch to industry. I worked in computer science until I retired, starting as a programmer, ending as a project manager. I really liked the variety of it." (Photo: Andreas Bucher) Alumnus René Roshardt (l.) also appreciates the variety in his profession. "As a computer scientist, you always come across new topics and projects. Often, you don't even have to leave your company to do so. Today, I work in IT projects and consulting. In my studies, I was mainly interested in theoretical issues. My worst memory of my student days: programming some floating point arithmetic in Assembler." (Photo: Andreas Bucher) As the first Department Head, Hans-Peter Frei (l.) did a lot for the young D-INFK. It also owes its English name to him. "One day, the ETH administration compiled brochures in which the whole of ETH was to be portrayed. As Department Head, I had to check them. I saw that 'Informatik' had been translated as Informatics and had that corrected to Computer Science." (Photo: Andreas Bucher) As a doctoral student, Peter Ursprung (r.) appreciated the unique opportunities ETH offered. "We had novel technologies like Lilith and leading experts like Professor Zehnder. This gave me an excellent foundation for my professional life and also professionalised computer science in the Swiss industry. It's no different today, when you see that global companies like Google are based in Zurich partly because of this degree course." (Photo: Andreas Bucher)

Photo gallery

You can find more photos from the event here: external page to the gallery.

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