Timeliness and speed are the main factors that influence the customer's acceptance.

A CD that is at least 6 months old and can only be used with supplemental printed information is a source of error and will certainly be criticized by the user.

On the other hand, the access speed to a specific informational file is an essential factor. If you have ever downloaded a large file via an analog modem from the Internet, you will certainly understand the impatience.