Editing Dan Ingalls (section)

==Work==
Ingalls' first well known research was at [[PARC (company)|Xerox PARC]], where he began a lifelong research association with [[Alan Kay]], and did his award-winning work on Smalltalk. As Peter Siebel wrote about Dan in his book Coders at Work, Reflections on the Craft of Programming, "If Alan Kay is Smalltalk's father, Dan Ingalls is its mother—Smalltalk may have started as a gleam in Alan Kay's eye, but Ingalls is the one who did the hard work of bringing it into the world. Starting with the first implementation of Smalltalk, written in BASIC and based on one page of notes from Kay, Ingalls has been involved in implementing seven generations of Smalltalk from the first prototype to the present-day open source implementation, Squeak."<ref>{{cite web | url=https://codersatwork.com/dan-ingalls.html | title=Coders at Work: Dan Ingalls }}</ref> Dan's design principles for Smalltalk included the important concepts of personal mastery, good design in a uniform framework, language for communication, interaction of language, the concept of "objects", storage management, messages, and other principles outlined in his Byte Magazine article in 1981, "Design Principles of Smalltalk".<ref>{{cite web | url=https://www.cs.virginia.edu/~evans/cs655/readings/smalltalk.html | title=Design Principles Behind Smalltalk }}</ref><ref>{{Cite web |url=http://users.ipa.net/~dwighth/smalltalk/byte_aug81/design_principles_behind_smalltalk.html |title=Design Principles Behind Smalltalk |access-date=2022-08-05 |archive-date=2007-09-27 |archive-url=https://web.archive.org/web/20070927190743/http://users.ipa.net/~dwighth/smalltalk/byte_aug81/design_principles_behind_smalltalk.html |url-status=dead }}</ref>

In 2020, Ingalls wrote [https://dl.acm.org/doi/10.1145/3386335 The Evolution of Smalltalk] for the ACM HOPL Conference, ACM Program. Lang., Vol. 4, No. HOPL, Article 85. Publication date: June 2020, which details the design of Smalltalk through Ingalls's multiple iterations of the language, including his development of Squeak in 1996.<ref>ACM Program. Lang., Vol. 4, No. HOPL, Article 85. Publication date: June 2020</ref><ref name="auto">{{cite journal | doi=10.1145/3386335 | title=The evolution of Smalltalk: From Smalltalk-72 through Squeak | journal=Proceedings of the ACM on Programming Languages | date=12 June 2020 | volume=4 | issue=HOPL | pages=85:1–85:101 | last1=Ingalls | first1=Daniel | s2cid=219603700 | doi-access=free }}</ref>  Although some may not be familiar with the language of Smalltalk or the fact that it began object orientation in programming, it is still a useful and well-used language.<ref name="auto"/>

[[Larry Tesler]] mentioned to [[Alan Kay]] and Dan Ingalls that he thought blocks of bits could be easily moved on the screen.  Ingalls told Larry that he would learn how to program in the lowest-level microcode to harness all available power.  [[Diana Merry]] had been working on programming text display, and after talking to her, Ingalls dug into the problem.  Months later, he figured out a way to move information that was "bit efficient."<ref name=how>[https://books.google.com/books?id=cTyfxP-g2IIC What the Dormouse Said: How the Sixties Counterculture Shaped the Personal Computer Industry] pp. 249-250</ref>

"The idea had come to him visually. When you are moving information on the display, whether it is scrolling or copying text or copying a graphical image from one place to another, you have a source and a destination within the computer's memory.  In his mind, he envisioned the concept as a wheel that rotated from the starting point to the end point. It was an idea that seemed obvious after Ingalls had conceived of it, and it has been copied widely by all of the graphical computing systems that have followed.  Today it remains at the heart of both the Macintosh and Windows computing worlds.  In the early 1970s, however, it was a radically new idea.  Called [[Bit blit|Bit Blit]], it enabled graphical menu systems to "pop-up" instantly on an Alto screen in response to a mouse click.  As much as any single software innovation, Bit Blit made the modern graphical computer interface possible."<ref name=how/>

Ingalls moved to [[Apple Inc.]] He left research in 1987, for a time to run the family business, the Homestead Resort,<ref>{{cite web | url=https://www.omnihotels.com/hotels/homestead-virginia?gclid=CjwKCAjw3K2XBhAzEiwAmmgrAg6EZzMJmqmUR7FiclA2TgBA7omWgCvNAKyfE_AnjDl7VzPGFMOdshoCQxwQAvD_BwE&gclsrc=aw.ds | title=The Omni Homestead Resort in Hot Springs VA &#124; Resorts in Virginia }}</ref> in [[Hot Springs, Virginia]].<ref>{{cite news |last=Layman |first=Sara |date=1987-10-22 |title=Homestead's New President Plans Emphasis on Tradition, Service |url=https://virginiachronicle.com/?a=d&d=TRE19871022.1.9&srpos=1&e=--1987---1987--en-20-TRE-1--txt-txIN-%22Dan+Ingalls%22 |work=The Recorder |access-date=2019-02-02}}</ref> The Ingalls family owned and operated the Homestead Resort for 100 years.<ref>{{cite web | url=https://www.therecorderonline.com/articles/rachel-h-ingalls/ | title=RACHEL H. INGALLS - the Recorder Online | date=11 March 2019 }}</ref><ref>{{cite web | url=https://www.historichotels.org/us/hotels-resorts/the-omni-homestead-resort/history.php | title=Hotel History in Hot Springs, Virginia &#124; the Omni Homestead Resort &#124; Historic Hotels of America }}</ref>

Ingalls returned to Silicon Valley in 1995, first working at [[Interval Research Corporation]], and then returned to Apple. Starting at Xerox, and then at Apple, he developed [[Fabrik (software)|Fabrik]], a [[visual programming language]] and [[integrated development environment]] (IDE), consisting of a kit of computing and [[user interface]] components that can be "wired" together to build new components and useful [[application software]].

Then he moved to [[Hewlett-Packard]] [[HP Labs|Labs]], where he developed a module architecture for [[Squeak]]. He also started a small firm, Weather Dimensions, Inc., which displays local [[weather]] data on home computers.<ref>{{Cite web |url=http://weather-dimensions.com/ |title=Weather Dimensions Incorporated: Weather on Display |last=Ingalls |first=Daniel Jr. |year=2008 |website=Weather Dimensions, Inc. |access-date=2020-04-11}}</ref>

Ingalls then worked as a Distinguished [[Engineer]] at [[Sun Microsystems]], where he worked in the [[Sun Microsystems Laboratories]] (Sun Labs) research wing. His latest project is a [[JavaScript]] environment named [[Lively Kernel]],<ref>{{Cite web|url=https://lively-web.org/|title=welcome|website=lively-web.org|accessdate=26 March 2023}}</ref> which allows live, [[Interactivity|interactive]] [[World Wide Web|Web]] programming and objects from inside [[Web browser]]s.

While best known for his work on Smalltalk, Ingalls is also known for developing an [[optical character recognition]] system for [[Devanagari]] writing, which he did in collaboration with his father, [[Daniel H. H. Ingalls, Sr.]],<ref>{{cite web | url=https://news.harvard.edu/gazette/story/2010/02/daniel-henry-holmes-ingalls/ | title=Daniel Henry Holmes Ingalls | date=18 February 2010 }}</ref> a [[professor]] of [[Sanskrit]].<ref name="PARC-OCR-talk">{{Cite AV media |last=Ingalls |first=Daniel |date=1980 |title=Sanskrit and OCR |trans-title= |medium=video |language=en |url=http://vimeo.com/4714623 |location=Xerox PARC, Palo Alto, California |publisher=Vimeo |access-date=2020-04-11}}</ref>

Ingalls  moved to [[SAP SE]] Palo Alto Research Center, as a [[fellow]]. He was a key member of the chief scientist team guiding the company's technology vision, direction, and execution. He moved his research group to [http://Y%20Combinator YCombinator], to a newly formed YCombinator Research Group, YCR, where he continued his research, living near the beach in [[Rio del Mar, California|Rio del Mar]], [[Aptos, California]] with his wife Cathleen Galas, where he also contributed to development of the [[Squeak]] implementation of Smalltalk, JavaScript research, and the Lively Kernel Project, which now resides at the [[Hasso Plattner Institute]].

Ingalls now consults and lives near the beach in Manhattan Beach, California, with his wife, Cathleen Galas.<ref>{{cite web | url=https://ucla.academia.edu/CathleenGalas | title=Cathleen Galas &#124; University of California, Los Angeles - Academia.edu }}</ref>