Dutch Auctions

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I mentioned so-called Dutch (or reverse) auctions last week before the seminar and have just come across an example of how Dutch-auctions occur in the wild. From Charlie's Diary:
Pricing ... we sell books by reverse auction, most expensive editions first, then cheaper editions, then mass market, until we get to the remainder shelves.

[Amazon, Macmillan: an outsider's guide to the fight]

I hadn't thought about book selling in this way before but that is exactly what it is. Or rather it has characteristics of a Dutch auction but also plays off the price against availability. If you want the good sooner then you pay more, even though there are many books available at this higher price, and if you wait then the price drops, although you get an inferior version in my opinion if you go for the paperback versus the hardback, but I digress. I wonder how this version affect the attributes of the auction in comparison to a true Dutch auction. Anybody know of any other versions of the Dutch auction happening in the real world (not necessarily agent related)?
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Choosing an Editor

During this morning's lecture I mentioned options for editing on Linux. There are two basic paths that you can go, a GUI editor or a text-based editor. If you go the GUI route then there are many options for notepad type functionality such gEdit on Gnome or kEdit on KDE. However, to really take advantage of Linux you need to learn a proper editor by which I mean a command line editor such as VI (pronounced Vee-Eye), VIM (VI-Improved), or Emacs. Unfortunately the learning curve is very steep on these editors so I can do nothing more than suggest that you try them out and see. Alternatives to the big command-line editors are the lightweight editors like pico or nano that at least give you some on screen help to save you from immediately getting completely lost as is usually the case with VI and Emacs the first time you try it. For interest you should be aware that the VI versus Emacs debate has been going on for many years and is akin to a holy war. Ultimately, our choice of editor is merely a personal decision based upon the needed features and perseverance. That said we can learn a lot from other people's reasons for choosing one editor over another, for example, over at Charlie Stross' blog there was a post a couple of days back about his choice of writing tools (he is one of the best sci-fi writers around at the moment and is part of a very strong Scottish Science Fiction landscape). Charlie is a VI user because Emacs gives him repetitive stress, and given enough time, as one of the commenters pointed out:
Your choice of a text editor is kind of like a tattoo, isn't it? After a while you have to look back on that decision you made when you were fifteen and realize, "yup, that's just never going to go away."
So I am interested to hear your views, especially if you have tried out the editors available in the Ubuntu VM and have settled on one that you will use during the remainder of the module.
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