Our lecture provides us students a quiz to revise the material learnt of the last study session.
The answer to the following questions was stated as "Yes":
"The receiver of a message does not have to be known, when the message was sent."
This really confused me, cause thus far I expected a sequence diagram to visualize the flow of data in a system and data is exchanged between actors/senders. It doesn't seem to make sense for me to send data to a seemingly arbitrary target and hope that by magic its receiver can work with the data and everything runs smoothly.
Does someone have a concrete example and illustration of such a case? I am interested in first how such a sequence diagram looks like and secondly, what a real world example would be.
I also believe the answer to be correct, cause the quiz hasn't changed since the past 5 years or so.