Dan Ariely, Professor of Behavioral Economics at Duke University and a visiting professor at MIT’s Media Laboratory, tells us that a study proved that people “tend to seek advice from experts who exhibit the most confidence” (full article at http://www.technologyreview.com/blog/post.aspx?bid=355&bpid=23760).

My comment:

“The study is of course really important, but proves what is well known: if you appear confident you are more likely to trusted by people.
What makes me think is that for every 10 people being confident without having content there should be at least 1 person caring less of presentation but having a lot more of content.
What really is awful is that, at the very sad end, in everyday life playground, is better not to be able to do things but being able to “sell” those things instead than the opposite.”
This post also at http://www.technologyreview.com/blog/post.aspx?bid=355&bpid=23760#comment-211576