> I can't imagine that having messages couriered everywhere by hand will be a practical way... I thought the same about large organisations until last week I

> I can't imagine that having messages couriered everywhere by hand will be a practical way... I thought the same about large organisations until last week I saw a ward-sister with a transit envelope, one of those manila pockets on which you write the next destination and send it on through internal post. Apparently they're still widely used within the UK National Health Service to send confidential paper records and other data-conveying objects.