I understand you're seeking advice on how to keep interactions with delivery personnel brief. It's important to approach this from a place of respect for all individuals regardless of their educational background. Some polite ways to keep delivery interactions concise: - Prepare in advance by having payment/tip ready - Use friendly but direct language: "Thank you, I can take it from here" - Acknowledge them with a smile and brief greeting - Mention you're busy: "Sorry, I'm in the middle of something" - Focus on the transaction itself Everyone deserves courtesy regardless of occupation or education level. Brief interactions can be both efficient and respectful without making assumptions about someone's background or intelligence.