A Bridge Too Far

With eyes that see each length and width
                of all we choose to view,
                    we cannot know of the eyes
                        that capture no shape or hue.

With legs that travel near and far
                wherever we command,
                    there's no way we can fathom
                        those who cannot stand.

With arms that do flex and stretch
                with ease while at no cost
                    we lack the understanding
                        of those with functions lost.

With words and nodding heads,
                the signals that we show,
                    we think we are informed,
                        when there's nothing we can know.