Why was this theory later discredited? What new theory emerged to replace the MBT, and what are the major propositions of this theory?

Questions for Discussion
1
One of the earliest theories of the effects of mass communication was later called the “magic bullet theory.”

Discuss the origins of the “magic bullet theory” and its major propositions.

Why was this theory later discredited? What new theory emerged to replace the MBT, and what are the major propositions of this theory?
2
Overall, are media effects weak or powerful? Why? How would you address this question?

Which important factors must be considered when addressing this complex issue?