Let me preface this post by saying I have nothing against Bent Flyvbjerg or his research. My problem is purely with how it’s used in the public media, and frequently even in other academic studies, which assume overruns take place even when they do not.
Stephen Smith sent me a link to an article in The Economist complaining about cost overruns on the California HSR Central Valley segment. The article gets its numbers wrong – for one, the original cost estimate for Merced-Bakersfield was never $6.8 billion, but instead was $7.2 billion in 2006 dollars and $8 billion in YOE dollars, according to CARRD, and as a result it portrays a 25% overrun as a 100% overrun. But the interest is not the wrong numbers, but the invocation of Flyvbjerg again.
Nowhere does the article say anything about actual construction costs – it talks about overruns, but doesn’t…
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Utopia, you are standing in it! 
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