Therefore， for those who can’t afford a handy camera or who are unwilling to bring it anytime anywhere， the written records may be the easiest form available. Further， another weakness of video is that its cost is too high and its correspondingly high-quality record may be beyond people‘s requirement. The cost of making a written report is much less than that of manipulating a video. Also， every morning we may browse a newspaper to know what happened throughout the world， and the simple report， which may only consume us a few seconds， meets our needs of curiosity; we needn’t the accuracy and vividness of video， which may be more time-consuming.
It is fortunate for us to own video as a supplementary kind of documentation. With a video camera， we can record important events in our lives， such as the weeding or birthday party. However， it is impossible to record everything happening around us， yet we can record them in our diaries. In a word， both the video camera and the written records are irreplaceable forms of documentation， and their supplementation serves better than any one of the documentation method alone.
