How the Sunk Cost Fallacy Feeds FarmVille Addiction and Bad Purchases

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It took me months to leave Farmville. And yes, I think it was the sunk costs...

A post from lifehacker.com by Kevin Purdy  has the whole story. Here is a part:

...Put simply, it's the feeling of "I've already spent X, so I'd better spend Y to salvage it." David McRaney's post makes good sense of how FarmVille is a master manipulator of the sunk cost emotion, but shows how it's hardly contained to pastimes and cheap addictions:
Hal Arkes and Catehrine Blumer created an experiment in 1985 which demonstrated your tendency to go fuzzy when sunk costs come along. They asked subjects to assume they had spent $100 on a ticket for a ski trip in Michigan, but soon after found a better ski trip in Wisconsin for $50 and bought a ticket for this trip too. They then asked the people in the study to imagine they learned the two trips overlapped and the tickets couldn't be refunded or resold. Which one do you think they chose, the $100 good vacation, or the $50 great one?


Over half of the people in the study went with the more expensive trip. It may not have promised to be as fun, but the loss seemed greater ... The fallacy prevents you from realizing the best choice is to do whatever promises the better experience in the future, not which negates the feeling of loss in the past.

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Predicates in Core Data

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Database programming is all about filtering and sorting tables linked to each other. According to the book Core Data , «Core Data is Apple’s object graph management and persistency framework for iOS, OS X, watchOS, and tvOS.» In a sense, predicates are an object version of the WHERE clause in SQL. Just like NSFetchRequest represent the FROM clause in SQL. I never have had problems with WHERE and FROM in SQL, but the predicate format strings in Core Data has been quite a struggle for me. I don’t think the struggle is only my fault. Predicates should clearly be thought, at least to me, as a method of writing WHERE clauses. Here is some notes from tutplus’ Core Data and Swift: Relationships and More Fetching : let predicate = NSPredicate(format: "%K == %@", "last", "Doe") The predicate format string uses %K (K stands for Key) for the property name and %@ for the value. let predicate = NSPredicate(format: "%K >= %i", ...
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How To Disable Google’s Personalization Of Search Results

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Do you want to know what the rest of the world gets as answer for their search, instead of what Google thinks you may want to see? I do, therefore the post from MakeUseOf.com by Ann Smarty did catch my interest. She explains it well, both for one-time use and how to change your firefox and chrome browser, and I just copy the one-time part: 2. Disable Google Personalization: One-Time (Browser Independent) Again, you may like the feature and the fact that Google tries to show you what you really want (your favorite sites or sites you are more likely to like on top), but in some cases you will want to see “real” results (for example, to check how your own website is doing). In this case, what you need to do is manually modify the search query URL path: just add this parameter: pws=0 The ‘pws=0′ parameter removes the search personalization: If you don’t want to add the parameter manually, use this browser bookmarklet (courtesy of  Google System Blog ): Turn off Google perso...
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InvestorForum by VentureLab in Oslo a success story #startups

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Photo from Hotel Continental website 200 persons, mostly investors, joined to see what 20 startups could offer in Oslo after the finance crisis . I was astonished to see so many foreign investors, from US and from UK. There was in my opinion a lot of great projects . Since I also presented, I could only follow some: Yes Game : They have ingenuos  reduced the chess board from 8X8 to 5X6 by taking away all second officers. In that way they have create a Chess Attack, which can take you into the final stage of a chess party immediately. They have it for iPhone and very important, also as a physical board. uformia created software very well suited for 3D printing. The CEO Cherie Stamm was an American living in Norway. She softened every Norwegian heart when the said the reason was our beautiful nature. 3D Printing is in my opinion a possibility for the Western society to rebuild the manufacturing industry we lost to China. kikora presented a math editor, which evalua...
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