Originally Posted by jhix
Of course, there is also the school of thought that says not to do TOO much. This will take away a horse's natural flight instinct which may make training later difficult. I.e., try to lunge a horse who has not fear of anything. He will look at your lunge whip like, "yeah, right, like that thing is going to hurt me....I ain't move'n" In essence, you end up with a 1200 pound puppy always wanting to be in your lap, which could be dangerous.
True, but I have only really seen this in hand-raised foals, where the foal doesn't have much interaction with horses until they're older, and they tend to treat humans as just another horse in the herd. I find that if they're with other horses they tend to learn to be a horse.