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David B. Black
See this for details: https://www.linkedin.com/pub/david-black/a2/2b4/49b
Recent Activity
I recently posted what I thought would be my least-read post ever. It's about the subject that has by far the greatest spread by far between "something tech people say is important" and "something tech people avoid thinking about or doing." There are many reasons why this is the case. High on the list is the fact that documentation occupies "below zero" status on the list of things programmers and their managers actually care about. I'm also guilty of this. Look at this detailed post I wrote about the hierarchy of status in programming and you'll see that documentation is... Continue reading
Posted yesterday at The Black Liszt
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Nearly everyone knows what “click bait” is – an article title that strongly tempts readers to click and read the article. Part of being a good writer/editor these days is developing a facility for click bait. My proposal for the most click unbaitable or click repulsion title is anything that includes the words “software documentation.” Is there a more boring subject on the planet? Even to software people? Or I should say especially to software people? It’s too bad, because software documentation is a genuinely important subject. Every ounce of effort put into it is not just an ounce of... Continue reading
Posted 4 days ago at The Black Liszt
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The unheralded Elizebeth Smith Friedman is a textbook example of the vast gulf that too often separates achievement in a field from getting credit for the achievement. She was a true pioneer of cryptography and code-breaking, leading multiple efforts against the international criminal mob and the Axis in World War II. Unlike most people called “leaders,” she was actually the best at what she did, personally cracking “uncrackable” codes and personally pioneering new methods. She was a leader in the true sense: the manager/boss of the long distance runners AND the runner far in front of everyone else who gets... Continue reading
Posted Oct 8, 2020 at The Black Liszt
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There have been two gigantic advances in programming languages, each contributing huge advances in programmer productivity. Since then, thousands of times more attention has been given to essentially trivial changes than has been given to the two giant advances. I described these 50 years of non-advances here. In this post I’ll go back in history to describe the two giant advances that were made in the early days of computing, back in the 50’s, and I’ll tack on the one important corrective that’s been made since then. From machine language to assembler Every machine has one and only one “machine... Continue reading
Posted Sep 23, 2020 at The Black Liszt
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I was inspired to examine 50 years of progress in computer languages by an article in the Harvard alumni magazine written by one of the leading figures in Harvard computer activity, Harry Lewis. Lewis graduated from Harvard College the year I entered, and he stayed on for a graduate degree while I was a student there. He says: Thirty veterans of Harvard’s Aiken Computation Lab reunited on January 19, 2020, some 50 years after each of us had a role in creating today’s networked, information-rich, artificially intelligent world. Rip van Winkles who had never fallen asleep, we gathered to make... Continue reading
Posted Sep 17, 2020 at The Black Liszt
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I grew up in Denville, a little town in northern New Jersey. I had a friend whose father knew someone who worked at what was then called EMSI, Esso Mathematics and Systems Inc., housed in a big complex on Park Ave. in Florham Park, NJ. I don’t think I even was interviewed, but I ended up with a job there the summer after graduating from the local public high school in 1968! EMSI was a service company, one of over 100 companies in the Standard Oil of NJ group of companies. The purpose of the company was to apply advanced... Continue reading
Posted Aug 9, 2020 at The Black Liszt
I've read thousands of job requirements for computer programmers over the years, and written or edited quite a number. I’ve interacted with hundreds of software groups and seen the results of their work. I’ve spent a couple decades cranking out code myself in multiple domains. There are a couple near-universal problems with job requirements that, if changed, would improve the quality of software groups and their productivity. Of course, it’s not just the job requirements and what the hiring people do – it’s also the managers, from the CEO down. They also have to not just support but champion the... Continue reading
Posted Jul 7, 2020 at The Black Liszt
Why is a monolithic software architecture evil? Simple. There is no need to explain “why,” because monolithic is not evil. Or even plain old bad. In fact it’s probably better than all the alternatives in most cases. Here’s the story. The Cool, Modern Programmers Explain The new, modern, with-it software people come in and look at your existing code base. While admitting that it works, they declare it DOA. They say DOA, implying “dead on arrival.” But since the software apparently works, it can’t be “dead,” except in the eyes of the cool kids, as in “you’re dead to me.”... Continue reading
Posted Jun 30, 2020 at The Black Liszt
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So you want to build optimal software, do you? What’s “optimal” in software, anyway? Is it building the software that’s needed quickly and well, with no bugs? Is it building software that’s easy to enhance, adding new features – including ones you never thought of – with minimal fuss and bother? Is it building software that’s easy to scale endlessly with little trouble? How about all of the above, all at once? Yup, that would be optimal, sure enough. I’ve described in general terms about optimal software. Here’s a map, a specific example, of how to get there. Going to... Continue reading
Posted Jun 20, 2020 at The Black Liszt
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The power of Occam-optimality, a.k.a. occamality, can be difficult to appreciate if your head is awash in myriad software buzzwords, and explaining it in software terms can make understanding it challenging to anyone unfamiliar with those terms. So it makes sense at this point to explain the core concept in a different context. Let’s think about the design of physical things, the kind of things that require discrete manufacturing, have bills of material, and so on, for example a washing machine. If every section of the washing machine were designed by someone different, each designer may call for a particular... Continue reading
Posted May 26, 2020 at The Black Liszt
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Experts and anointed authorities of various kinds, both academic and commercial, have been the front lines of resistance to innovation for centuries, up to the present. They are the firewall keeping what they consider to be rogue ideas outside the protected environments they oversee, protecting them from bad influences that their naïve but innocent charges might inadvertently adopt. It’s a good thing they’re on the job – otherwise things would be chaos and nothing would get done! This pattern is raised to a new level when the subject isn’t some specific business domain like healthcare, but the process of innovation... Continue reading
Posted May 15, 2020 at The Black Liszt
The FDA wants to keep us safe. They want the drugs we take to be what they’re supposed to be, and they want the medical equipment used on us to be safe and without fault or error. We all want that! However, the way they choose to achieve the goal for the software that is an essential part of most medical devices is deeply flawed, and leads to huge expense with only a small number of companies willing and able to follow the FDA’s regulatory regimen for software. The net result is medical equipment and software (which is increasingly a... Continue reading
Posted May 6, 2020 at The Black Liszt
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Lots of people would like the credit for establishing, once and for all, the core, immutable principle of optimal software design/architecture – the method for measuring which, among an infinite number of embodiments of software requirements, is provably the best among them. I am one of the crowd that would love to take credit! Alas, I and my competitors have been beaten to the punch, by a mere 700 years or so, by a guy named William of Occam. As it turns out, the software crowd is, as usual, late to the party: loads of luminaries in other fields have... Continue reading
Posted Mar 24, 2020 at The Black Liszt
When we look at a body of software, how do we judge it? Clearly, there are strong opinions on this subject – but there is no general consensus on the standards by which a body of code should be judged! This is shocking and unacceptable! For most normal people, i.e., people who aren’t software developers, software is “good” if is doesn’t crash and pretty much does what you want most of the time. What more could anyone want? Well, how about changing the software. This is one of the BIG things that makes software different from pretty much anything else... Continue reading
Posted Mar 10, 2020 at The Black Liszt
The 2017 Equifax data breach is in the news again because of the recent indictment of four Chinese government hackers for committing the break-in. How did they pull off such a feat? From China? As it turns out, Equifax’s defenses were so pathetic that a couple of bright nerd wise guys anywhere could have done it. By contrast, the Equifax hacking could not possibly happen at a car dealership – unless the dealership were run by government and corporate cybersecurity experts. Understanding why that’s so tells you everything you need to know about the expertise of the experts. The 2017... Continue reading
Posted Feb 29, 2020 at The Black Liszt
Nearly everyone who talks about fast and reliable application building seems to talk about the process (Agile etc.) and/or a couple architectural things (object-oriented, micro-services, etc.). From what I can tell, these haven’t led to any break-throughs in application velocity or predictability. However, it’s clear that there are methods for high-velocity application growth. A wide variety of small, motivated groups have re-invented them over the years. I have had the privilege of observing these groups and their methods, and seen the impact when they add or drop velocity-aiding methods. Here is an overview of some of the methods I’ve seen... Continue reading
Posted Feb 24, 2020 at The Black Liszt
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Everyone who’s even vaguely in touch with the headlines knows there was a problem getting results from the Iowa caucuses – a problem blamed on a software app built to automate reporting voting results. No one, including the maker of the app, disputes there was a serious software problem. Most of the commentary has focused on steps that should have been taken to assure that the app worked better than it did. The Wall Street Journal quoted various “experts” who stated – authoritatively, no doubt – that “testing could have prevented” the problems. What’s not being said is the emperor-has-no-clothes... Continue reading
Posted Feb 10, 2020 at The Black Liszt
In my work on Wartime Software, I describe the methods used by small groups of smart, motivated programmers to compete with large, established groups using standard software techniques – and win. I haven’t invented those methods; I’m simply collecting, organizing and describing what such groups of software ninjas actually do. Similarly, after observing the internal structure of many bodies of software over a long time, patterns emerge about the internal structures that yield competitive advantage, and tend to take market share. These internal structures are a kind of continuum rather than an either/or: a group that is farther along the... Continue reading
Posted Feb 3, 2020 at The Black Liszt
There is lots of knowledge about software user interfaces -- standards, models, experts and the all rest. But there's a problem: there is no difference, the way things are now, between designing a UI for someone using a piece of software for the first time, and someone who uses it over and over. This results in astounding waste of time for the heavy users of software. It's long since time to fix this glaring hole in UI theory! Most UI’s are built to optimize the initial experience of the person using it. The assumption is made that the person is... Continue reading
Posted Jan 27, 2020 at The Black Liszt
This post describes a little-known concept for understanding and creating software architecture that small groups use to defeat large, powerful incumbents and nimble competitors. It is one of a small number of powerful, repeating patterns that help us understand and predict the evolution of software. Understanding these patterns can help entrepreneurs direct their efforts; if they do it well, they greatly enhance their chances of success. Understanding the patterns can also help investors choose to invest in groups that are walking a path to success. Evolution of Applications Towards Abstraction on a Platform One of these patterns is the stages... Continue reading
Posted Jan 21, 2020 at The Black Liszt
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The principles underlying computer automation are clear and strong. They account for most of the automation we see. They tell us clearly what will happen, why it will happen, and what the benefits will be. What the principles do NOT tell us is who will first apply automation to what process in what sector. Understanding the principles lets you predict the rough order of the sequence of automation. The principles are extremely simple. Perhaps that's why they're rarely stated and appear not to be taught in schools or understood by practitioners. So much the better for people who want to... Continue reading
Posted Jan 14, 2020 at The Black Liszt
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The few people who are familiar with the term "luddite" think that a luddite is an unfortunate but stupid person who fights against advancements that make things better, while clinging bitterly to their crappy, low-end jobs. "Luddites" in this common view, are uneducated, progress-preventing people who need to be moved to the side so that society can be improved. The reality is that, in most cases, luddites were highly skilled craftsmen performing difficult and challenging jobs. It's not that much different today. Luddites are often highly educated professionals and managers who are convinced they bring value to their complex jobs... Continue reading
Posted Jan 6, 2020 at The Black Liszt
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While the success patterns laid out in the prior posts in this series may seem clear in the abstract, applying them in practice can be hard, because nearly everyone who thinks or talks about AI (these sets over overlap very little, sadly) takes a different approach. http://www.blackliszt.com/2018/03/getting-results-from-ml-and-ai-1.html http://www.blackliszt.com/2018/04/getting-results-from-ml-and-ai-2.html http://www.blackliszt.com/2018/04/getting-results-from-ml-and-ai-3-closed-loop.html I previously discussed the application of the principles to healthcare, with specific examples: https://www.blackliszt.com/2018/08/getting-results-from-ml-and-ai-4-healthcare-examples.html I've discussed the application of the principles to fintech, with a focus on anti-fraud: https://www.blackliszt.com/2019/12/getting-results-from-ml-and-ai-5-fintech-fraud.html In this post, I'll show how things can play out with a stellar example in fintech chatbots. Computers talking with People --... Continue reading
Posted Dec 10, 2019 at The Black Liszt
While the success patterns laid out in the prior posts in this series may seem clear in the abstract, applying them in practice can be hard, because nearly everyone who thinks or talks about AI (these sets over overlap very little, sadly) takes a different approach. http://www.blackliszt.com/2018/03/getting-results-from-ml-and-ai-1.html http://www.blackliszt.com/2018/04/getting-results-from-ml-and-ai-2.html http://www.blackliszt.com/2018/04/getting-results-from-ml-and-ai-3-closed-loop.html I previously discussed the application of the principles to healthcare, with specific examples: https://www.blackliszt.com/2018/08/getting-results-from-ml-and-ai-4-healthcare-examples.html In this post, I'll show how things can play out with a stellar example in fintech anti-fraud. The Use of ML in Fraud Detection Credit card fraud is a difficult, ever-evolving problem, not unlike cyber-security in general.... Continue reading
Posted Dec 3, 2019 at The Black Liszt