I have friends who are busy with work.
They often made an appointment with thier wife to travel abroad.
Can not travel as a result,
He advised his wife to go out and play,
He is still busy with work.
The result once,
He has to let go of work,
Because his wife had an accident while traveling.
Many people after their friends passed away,
Will still receive his Facebook,
because that Facebook can arrange the time of the meeting,
Just write the article, you can set when to send the article.