Personally, I don't find it "mind boggling", but rather in-line with reality. Large mega-projects usually suffer major delays, massive cost over-runs, complicat

Personally, I don't find it "mind boggling", but rather in-line with reality. Large mega-projects usually suffer major delays, massive cost over-runs, complications due to unforeseen events, and are at a high-risk for corruption. It is hard to believe we now have a handle on what it takes to do accurate costing of such large ambitious public infrastructure projects.