I used to stare at the ground as much as possible when passing people. Now that I look to see whether they may want a greeting, I often glance at each stranger's face/eyes before looking away quickly. If they smile, I smile back. If they say hello and my brain catches up, I say hello in return. If they look at me like "why are you looking at me" or other non-friendly facial expressions, I do not respond. If it were up to me, I'd rather not have contact with people on the sidewalk, but I can't avoid them, and I don't want to seem too anti-social. I guess I should be grateful that at least some people look at me with a greeting, rather than a repellant.
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Let us comfort each other, and move tenderly when we are able. Let us hold hands and walk bravely, or fearfully together; for as long as there is Love, there is Hope, that everything will be okay, including the things we say are not.