What types of topics are generally not appropriate for an impromptu speech?

Highly technical subjects are generally not appropriate for an impromptu speech because they require a deep understanding of specific jargon, concepts, and complex details that may not be readily accessible to the audience or the speaker in a spontaneous setting. Unlike current events, sports, entertainment, or personal anecdotes, which can be more relatable and easier to discuss without extensive prior knowledge, technical topics often demand a level of expertise and preparation that an impromptu format simply does not allow.

In an impromptu speech scenario, the focus is usually on the speaker’s ability to think quickly and communicate effectively on broader topics that engage the audience. The nature of highly technical subjects means they can easily lead to confusion or a lack of engagement if not presented clearly, thus making them less suitable for this type of speaking situation.