What is considered an unacceptable ethical practice?

The reason pretended certainty where tentative would be more accurate is considered an unacceptable ethical practice lies in the fundamental principles of honesty and transparency in communication. In public speaking, it is important to convey information accurately and responsibly. When a speaker asserts certainty on matters that are actually subject to debate or uncertainty, it misleads the audience and undermines their ability to make informed decisions. Ethical communication encourages speakers to acknowledge the limits of their knowledge and the complexity of issues rather than projecting a false sense of confidence. This enables a more open and credible dialogue, showcasing respect for the audience's intelligence and capacity for critical thinking.