Realism is a difficult thing to predict. If you're conservative in your estimate of what is probable, then you probably will choose to do nothing. If you are to

Realism is a difficult thing to predict. If you're conservative in your estimate of what is probable, then you probably will choose to do nothing. If you are too liberal, you may say I'm a dreamer (But I'm not the only one). If you manage to peg it to the true probability, then you will probably fail to inspire the imagination, and thus fail to motivate the ones that will help you achieve. Knowing this, you let your dream be a bit inflated, and by doing so you achieve more than you would have if you had said outright what was truly probable.