The value of conflict in organisations

I’ve been re-watching Margaret Heffernan’s TED talk on the value of conflict in organisations.  I particularly like this quote

So how do organizations think? Well, for the most part, they don’t. And that isn’t because they don’t want to, it’s really because they can’t. And they can’t because the people inside of them are too afraid of conflict.

The organisation as rational, cognitive, thinking model is really debunked by Heffernan in an eloquent and convincing argument.  How many organisations do you know (or work in or with) that strive to avoid conflict because they are scared it will ruin the idealised positivity?