In accounting, expert systems are used in auditing to help make judgment decisions on the level of substantive testing required. Engineers also use expert systems. In the olden days decisions were communicated using internal memos, reports or meetings. Computers have transformed this communication process. Email has replaced the internal memo.
Email is faster.
Just as mail spawned junk mail, Email has spawned junk Email. All Email programs will show the recipient the author and the title of the message. Some Email programs will show the recipient the first paragraph as well. When sending Email it is important to attract the attention or the reader with title and the first paragraph. Word processors and desk top publishers along with cheap colour printing allows more impressive reports.