Any audience can be broken down into four types of people:
There are the “what” people, those who will expect concrete facts. "What is this all about?" Is their typical question
Then there are the “Why” people. They want to know why you are talking about this and why does this happen and why and why and why. Five years old children are “why” people, along with the adults who are still connected with this extraordinary sense of curiosity...
There are “How” people. They are action oriented people. How to get things done is their main preoccupation.
The Buddha was one of these people, when he talked of a man wounded by an arrow as a metaphor for human condition. When his followers asked why things were the way they are, he answered that the question of how saving the life of the man hit by an arrow was mattered. Knowing why someone threw the arrow at him could wait..
At last and not at least (all people are equals), come the “What if” people. Whatever you may say will be put to the test. Talk about a sundial, the what people want to know what a sundial actually is, the how people want to know how to build one or how to read it, the why people wonder why on earth would they use one and the what if people will ask you what if there are clouds and the sun is hidden when you need to know the time!
Addressing those four different types of audiences will help you to match everyone’s thought patterns.
I think I am a “how” type, that’s why I am telling you: practice, practice and practice again...