I spoke to my Marine son, Grant, this weekend about how his Marine Combat Training is going. He said he's learning amazing battle strategies for the war in Iraq, but not Afghanistan. I asked him why and he said that they can't train them for what they haven't experienced yet. He said that strategy comes from failure and they haven't fought enough or failed enough to develop the best strategies.
That was very compelling to me. So often, we're afraid to fail, but look at all the lessons we miss!