Archive

Author Archive

Morrie Sez Boo!

October 31, 2014 Leave a comment
Categories: miscellaneous Tags: ,

The Bastid Jailer

October 27, 2014 4 comments

One would be insane to argue that legendary sci-fi writer Isaac Asimov was not a prolifically creative person. That’s why I rushed to read this essay he wrote waaay back in 1959 on the subject of creativity: Published for the First Time: a 1959 Essay by Isaac Asimov on Creativity.

As expected, Mr. Asimov did not disappoint. Check out his keen insights on some necessary conditions for tricking the bastid jailer of creativity into unlocking the shackles that keep it out of sight:

Creativity arises from an individual constructing mental connections between two or more ideas which might not ordinarily seem connected. This ability to make cross-associations often comes from eccentric individuals (those willing to fly in the face of reason, authority, and common sense) with a good background in a particular field, and with a keen interest in solving a specific problem in that field.

My feeling is that as far as creativity is concerned, isolation is required. The creative person is, in any case, continually working at it. His mind is shuffling his information at all times, even when he is not conscious of it. The presence of others can only inhibit this process, since creation is embarrassing. For every new good idea you have, there are a hundred, ten thousand foolish ones, which you naturally do not care to display.

Besides the shackles, our bastid jailer controls a powerful anti-creativity force field baked into our minds:

Probably more inhibiting than anything else is a feeling of responsibility. The great ideas of the ages have come from people who weren’t paid to have great ideas, but were paid to be teachers or patent clerks or petty officials, or were not paid at all. The great ideas came as side issues. To feel guilty because one has not earned one’s salary because one has not had a great idea is the surest way, it seems to me, of making it certain that no great idea will come in the next time either.

But we’re not done yet. Our bastid jailer is not alone! He has cleverly deputized the entire human race to be on guard against jailbreaks :

The world in general disapproves of creativity, and to be creative in public is particularly bad. Even to speculate in public is rather worrisome.

Bastid Jailer

 

 

 

Heroes And Admiration

October 25, 2014 4 comments

Every person has at least one hero whose work they admire. If you’ve glanced at my “about” page, you may have correctly assumed that one of my heroes is writer/speaker Scott Berkun. I’ve followed Scott and read all of his books since he made the scary leap long ago from a safe job at Microsoft into the unforgiving jungle of self-sufficiency.

I like Scott’s work so much because I think he’s genuine, transparent, sincere, and down-to-earth. In short, his ideas and insights are helpful to his readers. That’s why I got a kick out of this twitter exchange:

berkun twitter exchange

Scott’s brand new, kickstarter-funded, book is titled “The Ghost Of My Father“. It’s a radical departure from his other books in that it’s a deeply personal treatise on growing up with an absentee father. Go out and buy it, pronto!

ghost

If I ever get my lazy ass out of “blog only” mode and hunker down to write some kind of unsellable book for my own personal satisfaction, Scott will have been a huge influence on the transition.

A Fascinating Conversation

October 22, 2014 Leave a comment

“A Conversation with Bjarne Stroustrup, Carl Hewitt, and Dave Ungar” is the most fascinating technical video I’ve seen in years. The primary focus of the discussion was how to write applications that efficiently leverage multicore processors. Because of the diversity of views, the video is so engrossing that I watched it three times. I also downloaded the MP3 podcast of the discussion and saved it to a USB stick for the drive to/from work.

When pure physics started limiting the enormous CPU clock speed gains being achieved in the 90s, vertical scaling came to an abrupt halt and horizontal scaling kicked into gear. The number of cores per processor started going up, and it still is today.

Cores vs clock speed

There was much discussion over the difference between a “lock” and “synchronization“. As the figure below illustrates, main memory is physically shared between the cores in a multicore processor. Thus, even if your programming language shields this fact from you by supporting high level, task-based, message passing instead of low-level cooperative threading with locks, some physical form of under-the-hood memory synchronization must be performed in order for the cores to communicate with each other through shared memory without data races.

SMP HW Arch

Here is my layman’s take on each participant’s view of the solution to the multicore efficiency issue:

  • Hewitt: We need new, revolutionary, actor-based programming languages that abandon the traditional, sequential Von Neumann model. The current crop of languages just don’t cut it as the number of cores per processor keeps steadily increasing.
  • Ungar: We need incoherent, unsynchronized hardware memory architectures with background cache error correction. Build a reliable system out of unreliable parts.
  • Stroustrup: Revolutions happen much less than people seem to think. We need to build up and experiment with efficient concurrency abstractions in layered libraries that increasingly hide locks and core-to-memory synchronization details from programmers (the C++ threads-to-tasks-to-“next?” approach).

TTA

Hopelessly Irreducible

October 19, 2014 Leave a comment

Some of the parody accounts on Twitter are hilariously creative. Take “InfoSec Taylor Swift” for example:

Irreducible

The key word in Ms. Swift’s aphorism is “irreducible“. Being one of those things that isn’t objectively measurable (it’s funny how many things in real life are unmeasurable), one man’s “irreducible” is another man’s “reducible“.

I’ve discovered that many people, especially penny-obsessed managers, are so quick to assume and accept irreducibility in a complex system that they don’t even attempt to reduce its complexity:

  • It takes time (which directly maps into expense) and hard mental labor to unravel complexity.
  • In macho org cultures, irreducible complexity is often seen as intelligent sophistication, a badge of honor, a step toward lofty guru status.

Conversely, it is easier and less time consuming (which again directly maps into expense) to concoct an irreducible complex monolith than it is to thoughtfully build a reducible complex system of smoothly interacting parts.

reducible

The #noprograms Revolution

October 16, 2014 Leave a comment

I’ve been developing software in the aerospace and defense industry for 30+ years. Because of the sizes of, and innate System-of-Systems nature of, the solutions in this domain, the processes used to develop them are by necessity, heavyweight. Oh sure, agile/lean techniques can be used effectively in the teeny-tiny-small deep down in the bowels of some of these programs, but to assume “scaling agile” will work in a domain with hundreds of programmers from multiple contractors working on the same distributed system is naive at best, and downright disingenuous at worst.

The most ridiculous examples of inapplicable development practices to the aerospace and defense industry are #noestimates” and “#noprojects“. The “#noprojects” cult is so far off base that they don’t even acknowledge the existence of “programs” – which are a way of organizing a large set of inter-dependent “#noprojects” into, well, a larger grained mission-critical entity worth tens of millions of dollars. It’s like before there were classes and namespaces(packages) added to a programming language to accommodate increasing software system size, there were only “functions” for organizing the structure of a program – and having functions as your only organizing mechanism doesn’t scale well to large software systems.

Hell, the #noprojects people are akin to #noclasses and #nonamespaces people, of which there are thankfully, #nomembers. Really hardcore #noprojects people are perhaps even more loony. They are equivalent to a hypothetical #nofunctionsallowed crowd that demands monolithic, straight-line code only. Line number 1 straight to line number 5,000,000 – and you can’t use loops or “ifs” because they don’t add value and #nofunctionsallowed is all about “maximizing the amount of work not done“.

justcode

But hey, if you don’t need any “projects” to build a successful product from the gecko, then by extrapolation you don’t need any “programs” for organizing your projects. Hence, the inimitable BD00 proposes to “scale up” the “#noprojects” movement. We’ll start a revolutionary #noprograms movement, or equivalently, #justcode . We’ll leapfrog both the #noestimates and #noprojects movements at once. W00t!

noprograms

Dude, Cut Me Some Slack

October 13, 2014 Leave a comment

Since I enjoyed reading Tom DeMarco’s “Slack: Getting Past Burnout, Busywork and the Myth of Total Efficiency” years ago, this diagram in  Jamshid Gharajedaghi’s “Systems Thinking: Managing Chaos and Complexity” brought back some fond memories of that book:

Slack

The diagram shows the slow, insidious erosion in flexibility that occurs in a complex system when efficiency and optimization initiatives are relentlessly applied to the system by its uninformed stewards. As the “slack” is stretched out of the system due to increasing internal pressure, it: 1) loses its robustness to external stressors, 2) the tension between connected nodes increases, and 3) the inter-node couplings harden. At the system breaking point, one or more of the connections crack open, the nodes fly apart, and the conglomeration ceases to function as a whole – a system. I hate when that happens!

Follow

Get every new post delivered to your Inbox.

Join 470 other followers

%d bloggers like this: