Just In Time Design
We don’t perfect design in our programming until we’re sure we’re going to keep it.
Here is a link to the article from 2003 that impressed me, which I mentioned in the video.
We don’t perfect design in our programming until we’re sure we’re going to keep it.
Here is a link to the article from 2003 that impressed me, which I mentioned in the video.
Sometimes data changes shape and type over time. In my case, we had a game that was given away free as a demo. We saved the player’s game state – that is, the number of points they had, objects they had earned in the game, etc. as a JSON object. Happy Day! The game became…
I am an unashamed statistical programming geek. I’m leaving very soon, stopping to visit my mom on the way to SAS Global Forum because 94.7% of all mothers have retired to Florida by age 68. (That is a real statistic. As someone commented about fake boobs – if they exist, they’re real.) I admit it,…
Is that enough acronyms for you? I’ll be speaking at Celebrating Equity: Women in STEM at ELAC. STEM = Science, Technology, Engineering and Mathematics ELAC – East Los Angeles College It’s 12:15 – 1:15 pm and it is free. There are six panelists (including me). Download Women in STEM Poster I presented last year and…
I think descriptive statistics are under-rated. One reason I like Leon Gordis’ Epidemiology book is that he agrees with me. He says that sometimes statistics pass the “inter-ocular test”. That is, they hit you right between the eyes. I’m a big fan of eye-balling statistics and SAS/GRAPH is good for that. Let’s take this example….
A two-by-two table is a very common design. The column variable is some type of treatment or intervention. For example, older (over 65 years of age) people who either lived in a nursing home or who did not. Your row variable is some categorical outcome. For example, they either lived or died. You create a…
Where is the Multivariate Analysis of Variance ? You promised there would be MANOVA ! Now we’re in the third post! First there was recoding of variables. Then, there was creating scales. Now, we’re looking at reliability. Patience is a virtue. Before we get to doing a MANOVA we want to be sure that our…
Transcript (with a couple of ‘ands’ taken out and sans the hand waving):
What I wanted to talk about, though, was just in time design and programming. I read something from IBM about 10 years ago, and I was really impressed because I thought they were kinda ahead of their time, and I was surprised that it came from a big company. The idea is that you do programming, you do design, as you need it. Often people will see things that I put on my blog, things that I’m working on, and say very insightful correct comments that “you need to do this”, “you need to do that”. And they’re absolutely right: the reason we haven’t done it, whatever it happens to be, is that we’re a really small company. So if we’re, say, working on the storyline, and we’ve got the movies done, and they go from the movies to an input page, where they have to answer a math problem, and then they go to study something before they take a quiz to go back into the story… each of those parts needs to be done. Yes, there’s probably better ways to do the quiz than SurveyMonkey – one of the things I spent a lot of time doing was replacing the way we had originally done the quizzes – but until we’ve tested out whether that kind of design is what we want to do, working on perfecting each individual part of it is probably not the most cost effective use of our time. And cost-effective use of our time is something my next video blog is about…
What an incredibly nice thing to do. Thank you.
Ah, the Kaizen of programming. I agree iterative development is the way to go because it allows all kinds of feedback loops to be baked in. The downside is every new iteration with the client gives them a chance to feature creep the hell out of it if they feel they have the chance to (which could be a good or bad thing depending on the circumstances).
On large scale projects, it’s not uncommon at all to prototype a product in Ruby on Rails then go back later and rewrite it in Java for performance (if it really needs to scale). Twitter did this.
Iterative development is the _smart_ way to do it.
However, if you post a blurb of code on your blog specifically discussing its problems, be prepared to hear what’s wrong with it, regardless of your stage of development. 😛
Honestly, I *appreciate* hearing what is wrong, because there is no guarantee that when we get to that state of development we will think of everything.
On the scope creep – it also prevents us from the opposite. I’m working on a project now where I can think of all kinds of cool stuff but maybe the client wants bare bones.
AnnMaria: my pleasure. My hands are happy and it turns out to be fairly easy to transcribe with html5 video and 0.5x playback on youtube :).