SIGCHI is 40! 1982 May First 'CHI' conference, Gaithersburg USA, organised by SIGSOC Social and Behavioural Science Computing existed already 13 years since 1969 SIGSOC renames to SIGCHI 1983 Boston first conference namd CHI. I came to the Netherlands on a sabbatical in 1982. All my research technical but underlying question: how do you make computers easier to use. 1991 CHI in New Orleans, my first, presentation 1993 first 'international' CHI, InterCHI 93 Amsterdam. I am local org, and de facto SV chair 1994 Jan, EiC SIGCHI Bulletin - 1999 1995 SV Chair at CHI 95, Denver 1995: SIGCHI Bulletin online 1997 Conference Chair, CHI 97 Atlanta 1998-2004 EiC interactions 2009 Lifetime Service Award 2022 Lifetime Practice Award, New Orleans Me 1982: ABC -> Python 1988 Internet 1988 Views 1991 Web 1994 First Web conference 1995 Chair European W4G Chair Stylesheet workshop Join CSS, HTML Go on to chair HTML: XHTML, XForms, RDFa Now: ixml, XForms, Declarative Amsterdam SIGCHI.NL is 25! 1985: Dutch language, non-SIGCHI "MCI” (Mens-computer Interactie). 1993 InterCHI, all 3 chairs from MCI 1995: Plans to merge Battle over name 1997 July: First conference with Jakob Nielsen as keynote: 200 attendees 2nd Largest local SIG Web and Beyond conference CHI Sparks Conference Hiatus 2019: Restart? Battle over name again Now: We're back! Notations and HCI A68 Pascal Newspeak ABC Views HTML CSS RDFa XForms Maths ixml Steven is a researcher affiliated with the CWI. At university he was tutored by Richard Grimsdale, himself tutored by Alan Turing. His research is broadly in interaction, and how the underlying software architecture can better support users. For instance Steven co-designed the programming language ABC, the forerunner of Python, and was the first user of the open internet in Europe, involved with the Web from the beginning, helping design many of the foundational technologies. Steven was a member of the SIGCHI Executive Committee for a decade, editor in chief of the SIGCHI Bulletin, and ACM/interactions, and chaired the CHI conference in 1997. He was one of the founding members of CHI Nederland. This year he was awarded the ACM SIGCHI Lifetime Practice Award.