Not even a "good evening" for your fellow human? I usually nod or say a quick greeting in passing as I head out for the evening. I've also thanked the guy who

Not even a "good evening" for your fellow human? I usually nod or say a quick greeting in passing as I head out for the evening. I've also thanked the guy who refills the soda can dispenser, pointing out that the company runs on caffeine. Each of these interactions takes less than 30 seconds and reminds us of our shared experience on this planet.