We all like to think we learnfrom mistakes, whether our own or others'. So in theory, the more serious bloopers you know about, the less likely you are to be under the bright light of interrogation, explaining how you managed to screw up big-time. That's why we put out an all-points bulletin to IT managers and vendors everywhere: For the good of humanity, tell us about the gotchas that have gotten you, so others can avoid them. As it turns out, our many contributors to this article had a lot to say - but precious little to say on record. Names may be withheld, but the lessons are still potent. We've distilled this glut of information down to the top 20 mistakes - instances in which wrong decisions can lead to costly project overruns, business disasters, and in the worst cases, lost jobs. Read on, takes notes, and avoid.
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