How does the book "TED Talks: The Official TED Guide to Public Speaking" challenge existing paradigms of public speaking?

Small businesses can use the key topics of font and color usage in presentations to improve their public speaking and presentation skills by adhering to the guidelines provided in the book. They should stick to one typeface, preferably a simple one like Helvetica or Arial, and use a font size of 24 points or larger to ensure readability. They should limit themselves to three font sizes: one for titles, one for main text, and one for supporting ideas. In terms of color, they should opt for simple and contrasting colors, such as black or a dark color on a white background. These strategies can help to make their presentations more visually appealing and effective.

Individuals might face several obstacles when applying the concepts of font and color usage in presentations. One potential obstacle could be the lack of understanding of the importance of font size and typeface. This can be overcome by educating oneself about the impact of these elements on the readability and overall effectiveness of the presentation. Another obstacle could be the difficulty in choosing contrasting colors that are pleasing to the eye and also enhance readability. This can be overcome by studying color theory or using online tools that suggest color combinations. Lastly, individuals might struggle with maintaining consistency in font and color usage throughout the presentation. This can be overcome by setting a standard template at the beginning and sticking to it.