When you’re Public Speaking there are a few Obstacles:
You need to be well prepared.
Parts of the audience will be distracted.
People’s attention span is limited.
The crowd is there for a reason, and it’s usually not you.
So, your message needs to be well thought out, clear and delivered in a tone that connects with the occasion.
The same Obstacles are true of your mass marketing.
And so are the tactics to overcome them.