Web accessibility for people with vision impairments

http://www.youtube.com/v/2j2x2miPPDQ?version=3&autohide=1&autoplay=1&showinfo=1&attribution_tag=PXsqYF29fA1Ytp6O_h9bWQ&feature=share&autohide=1 Those who are seeing can see reason only.But those who who are blind can see both reason and logic.