Down the Docks

September 28, 2008

Kludge Discounts

Filed under: Technology — ealing @ 3:59 pm

When a managment decision favours speed to market (and therefore revenue) over superior implementation (and therefore lower long-term costs) are they generally:

  1. failing to hear or understand that quicker may be more expensive in the long-run?
  2. discounting future costs too heavily?
  3. expecting future costs that are too low?
  4. discounting their future costs correctly, and costs to others too heavily?
  5. getting it right?

The correct discount rate within any company must vary depending on its health and funding, so the rate at which people discount too heavily must also vary. If the discount rate is very high, as it may be for a startup, for instance, then the decision that brings revenue quickly will be the right one.

Are there any other observable patterns in these decisions?


February 24, 2008

Understanding Code

Filed under: Technology — ealing @ 6:27 pm

Every programmer should be able to understand and reason about a line of code in one of his* working languages. It’s far more useful, though, to be able to understand and reason about blocks of code. (more…)

January 27, 2008

Life Quickly Imitates Art, Even Sci-Fi

Filed under: Books, Current Affairs, Technology — ealing @ 1:12 pm

Charles Stross is now one of my two favourite currently publishing SF authors (the other is Iain M. Banks). I got a copy of his latest, Halting State, from Amazon a couple of days ago. I haven’t finished it yet, but so far it’s about economic sabotage in an MMORPG, set in 2016.

Like another modern Aristotle of SF, Neal Stephenson, Charles Stross seems to understand everything, including economics. More importantly, he understands why it’s important (something I only started to grasp a couple of years ago) and can explain it without killing the story. So Halting State spends some of its time discussing money supply and inflation within virtual worlds. So far ahead of the curve, so Charles Stross, I think.

Last night I picked up this week’s Economist, to find mention in the business headlines of Second Life‘s financial crisis. Halting State‘s characters refer to Second Life as a metaverse, not a MMORPG, but I still find this amazing. Theoretical GDPs and game-currency-to-hard-currency exchange rates have been published for a while now, but maybe the crossover from amusing sideline to area of serious interest is closer than even Charles Stross thinks.

Sex, Lies, and Money

Filed under: Technology — ealing @ 1:47 am

I’ve never tried placing an advert on Facebook, but I’ve been told that FB offers excellent targetting. Apparently it’s possible to require that your ad only be shown to people who fit very narrow definitions, such as people who went to Imperial College and are under 25, or married women living in Cambridge.

Obviously, no amount of matching values from profiles will tell an advertiser exactly who will buy their stuff, but they will want to play the odds. It’s generally a waste of money to advertise a UK service to someone living in France, or to advertise books to someone who hasn’t filled in the “Favourite Books” field. On the other hand, travel, financial products and cosmetic surgery can be usefully adertised to both sexes, so you wouldn’t want to filter out some of that potential audience.

Now, if advertisers know their desired audience, and have tracked their previous successes and failures, they will have a good idea of which fields in my personal information are important and which are not. They probably have hard evidence to back this up.

The second and subsequent lines of my Facebook profile are:



Interested In:


Relationship Status:


These three bits of info are the truth and the whole (relevant) truth. Facebook advertisers seem to be very interested in them, judging by the ads that are normally shown to me – I guess about a third are dating-related.

So I was a little surprised, initially, to see an ad earlier for, a gay dating/event site. Didn’t they see that I am “Interested In” women, and not men? A couple of seconds later I clicked that they probably don’t care what I put in “Interested In” – they presumably figure that there are enough men out there in the closet that it’s worth advertising to the apparently straight men as well as the openly gay. And they quite possibly have the statistics to back this up.

I wonder what else you could find out about society by examining Facebook advertising patterns, maybe using multiple fake accounts. Other people have been datamining it recently as well, although not using any advertising-related data. My hope with advertisers’ choices is that at least some of them would be gathering real evidence of what worked, rather than just guessing.

January 13, 2008

Division of Labour

Filed under: Blogroll, Technology — ealing @ 2:21 am

I’ve just moved my Oracle stuff over to a separate new blog, Learning Oracle. Only suitable for the seriously technically inclined!

May 18, 2007

One Laptop Per Child

Filed under: Current Affairs, Technology — ealing @ 3:15 pm

I love the whole project, and I really want one of these. Hopefully they’ll do something other than green, though

December 22, 2006

Problems with Oracle

Filed under: Technology — ealing @ 1:44 pm

Sometimes you can’t Ask Tom.

November 27, 2006

What Happened

Filed under: Technology — ealing @ 3:26 pm

If you’re wondering why I’ve been so silent, I managed to trash my computer quite badly.


October 20, 2006

Amazing Space Thingy Pt II: Private Space Travel

Filed under: Science, Technology — ealing @ 12:07 pm

I wrote about exoplanets a couple of weeks ago. This is the other thing that I find really amazing.


October 11, 2006


Filed under: Salsa, Technology — ealing @ 12:58 am

It’s tricky, but someone in my family seems to have the knack.


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