Ethan is giving a highly technical presentation on biomedical engineering involving several working models, computerized graphs, and video clips to a small group of doctors, scientists, and engineers. Which two characteristics of public speaking should he be most concerned with during his preparation?

In giving a highly technical presentation, it's important to have the right confidence and an ability to tell a story to the audience. Confidence to show that the speaker is knowledgeable and the topic presentation is well-researched. One can get lost to a technical presentation either with confusion or lack of interest, So a speaker must also be able to connect to his audience, to make them listen and make their minds go with the speaker as he goes on with his presentation, to hold their full attention.