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One day at work, I was coming into my building just as a small group of visitors was leaving. My old friend was part of this group. As I was holding the door we made eye contact as he said thanks, yet no recognition dawned in his eyes. He did not register who I was. As he was involved in shop talk, I did not chase him down to say hello. I figured that, perhaps, he would stop by my office when he got a chance or that I might encounter him again in the hallway. But I did not see him again during his visit.
Another several years have gone by now since that incident and I have not seen my old friend in the interim. However, just a few days ago, essentially the same scenario played itself out again. I was entering into a building at work and passed my old friend. Yet when he showed no signs of recognition again, I let the moment go. I could tell that I was not being snubbed or ignored. I guess it was just a trick of time.