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Bill Joy

Bill Joy is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Bill Joy rather than just read about it. In short: William Nelson Joy (born November 8, 1954) is an American computer engineer and venture capitalist. He co-founded Sun Microsystems in 1982 along with Scott McNealy, Vinod Khosla, and Andy Bechtolsheim, and served as Chief Scientist and CTO at the company until 2003.

Bill Joy — main illustration
Bill Joy — illustration

Key takeaways

  • Bill Joy belongs to computer science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Bill Joy to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Bill Joy from memory before moving on to harder problems.

Reference excerpt

William Nelson Joy (born November 8, 1954) is an American computer engineer and venture capitalist. He co-founded Sun Microsystems in 1982 along with Scott McNealy, Vinod Khosla, and Andy Bechtolsheim, and served as Chief Scientist and CTO at the company until 2003. He played an integral role in the early development of BSD UNIX while being a graduate student at Berkeley, and he is the original author of the vi text editor. He also wrote the 2000 essay "Why The Future Doesn't Need Us", in which he expressed deep concerns over the development of modern technologies. Joy was elected a member of the National Academy of Engineering (1999) for contributions to operating systems and networking software.

Early career Joy was born in the Detroit suburb of Farmington Hills, Michigan, to William Joy, a school vice-principal and counselor, and Ruth Joy. He earned a Bachelor of Science in electrical engineering from the University of Michigan and a Master of Science in electrical engineering and computer science from the University of California, Berkeley, in 1979. While a graduate student at Berkeley, he worked for Bob Fabry's Computer Systems Research Group (CSRG) on the Berkeley Software Distribution (BSD) version of the Unix operating system. He initially worked on a Pascal compiler left at Berkeley by Ken Thompson, who had been visiting the university when Joy had just started his graduate work. He later moved on to improving the Unix kernel, and also handled BSD distributions. Some of his most notable contributions were the ex and vi editors and the C shell. Joy's prowess as a computer programmer is legendary, with an oft-told anecdote that he wrote the vi editor in a weekend. Joy denies this assertion. A few of his other accomplishments have also been sometimes exaggerated; Eric Schmidt, CEO of Novell at the time, inaccurately reported during an interview in PBS's documentary Nerds 2.0.1 that Joy had personally rewritten the BSD kernel in a weekend. In 1980, he also wrote cat -v, about which Rob Pike and Brian W. Kernighan wrote that it went against Unix philosophy. According to a Salon article, during the early 1980s, DARPA had contracted the company Bolt, Beranek and Newman (BBN) to add TCP/IP to Berkeley UNIX. Joy had been instructed to plug BBN's stack into Berkeley Unix, but he refused to do so, as he had a low opinion of BBN's TCP/IP. So, Joy wrote his own high-performance TCP/IP stack. According to John Gage:

BBN had a big contract to implement TCP/IP, but their stuff didn't work, and grad student Joy's stuff worked. So they had this big meeting and this grad student in a T-shirt shows up, and they said, "How did you do this?" And Bill said, "It's very simple – you read the protocol and write the code." Rob Gurwitz, who was working at BBN at the time, disputes this version of events.

Sun Microsystems In 1982, after the firm had been going for six months, Joy, Sun's sixteenth employee, was brought in with full co-founder status at Sun Microsystems. At Sun, Joy was an inspiration for the development of NFS, the SPARC microprocessors, the Java programming language, Jini/JavaSpaces, and JXTA. In 1986, Joy was awarded a Grace Murray Hopper Award by the ACM for his work on the Berkeley UNIX Operating System. On September 9, 2003, Sun announced Joy was leaving the company and that he "is taking time to consider his next move and has no definite plans".

Post-Sun activities In 1999, Joy co-founded a venture capital firm, HighBAR Ventures, with two Sun colleagues, Andy Bechtolsheim and Roy Thiele-Sardiña. In January 2005 he was named a partner in venture capital firm Kleiner Perkins. There, Joy has made several investments in green energy industries, even though he does not have any credentials in the field. He once said, "My method is to look at something that seems like a good idea and assume it's true". In 2011, he was inducted as a Fellow of the Computer History Museum for his work on the Berkeley Software Distribution (BSD) Unix system and the co-founding of Sun Microsystems.

Technology concerns In 2000, Joy gained notoriety with the publication of his article in Wired magazine, "Why The Future Doesn't Need Us", in which he declared, in what some have described as a "neo-Luddite" position, that he was convinced that growing advances in genetic engineering and nanotechnology would bring risks to humanity. He argued that intelligent robots would replace humanity, at the very least in intellectual and social dominance, in the relatively near future. He supports and promotes the idea of abandonment of GNR (genetics, nanotechnology, and robotics) technologies, instead of going into an arms race between negative uses of the technology and defense against those negative uses (good nano-machines patrolling and defending against Grey goo "bad" nano-machines). This stance of broad relinquishment was criticized by technologists such as technological-singularity thinker Ray Kurzweil, who instead advocates fine-grained relinquishment and ethical guidelines. Joy was also criticized by The American Spectator, which characterized Joy's essay as a (possibly unwitting) rationale for statism. A bar-room discussion of these technologies with Ray Kurzweil started to set Joy's thinking along this path. He states in his essay that during the conversation, he became surprised that other serious scientists were considering such possibilities likely, and even more astounded at what he felt was a lack of consideration of the contingencies. After bringing the subject up with a few more acquaintances, he states that he was further alarmed by what he felt was that although many people considered these futures possible or probable, that very few of them shared as serious a concern for the dangers as he seemed to. This concern led to his in-depth examination of the issue and the positions of others in the scientific community on it, and eventually, to his current activities regarding it. Despite this, he is a venture capitalist, investing in GNR technology companies. He has also raised a specialty venture fund to address the dangers of pandemic diseases, such as the H5N1 avian influenza and biological weapons.

Joy's law

Of management

… excerpt ends here. Continue reading the full article.

Illustrations

Bill Joy illustration

Worked examples

Example 1 — a first encounter with Bill Joy

Start with the simplest possible case. Write down what Bill Joy claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Bill Joy before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Bill Joy ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Bill Joy

In research
Bill Joy appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Bill Joy in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Bill Joy is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1954 births, American billionaires, American computer programmers, so understanding it makes those chapters shorter.
In everyday life
Look for Bill Joy outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Bill Joy in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Bill Joy means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Bill Joy out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Bill Joy in simple terms?

William Nelson Joy (born November 8, 1954) is an American computer engineer and venture capitalist. He co-founded Sun Microsystems in 1982 along with Scott McNealy, Vinod Khosla, and Andy Bechtolsheim, and served as Chief Scientist and CTO at the company until 2003.

Why does Bill Joy matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Bill Joy?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Bill Joy.

Tags

  • 1954 births
  • American billionaires
  • American computer programmers
  • American computer scientists
  • American electrical engineers
  • American futurologists
  • American venture capitalists
  • BSD people
  • Computer systems researchers
  • Grace Murray Hopper Award laureates
  • Internet pioneers
  • Kleiner Perkins people

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