- Know your facts thoroughly.
- Use scientific-looking visuals(elements that people associate with science, like formula or graphs).
- Demonstrate that other people agree.
- Using phrases that indicate a degree of uncertainty makes you seem more interesting interested in finding the truth than in winning arguments.
- End your sentences with verbal affirmations (e.g." isn't it?").
- Lower the pitch of your voice. It improves your powers of persuasion.
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