Feel a bit awkward posting this here, but today, for the first time, I've had an experience for which I couldn't find a fully satisfactory rational explanation. Some of you know that I occasionally work as a tour guide in a major museum (this one). I had a public tour today and while going through one of the biggest rooms, I spotted my brother. I'd estimate he was about ten metres away give or take. I was surprised to see him, because I'd have expected him to tell me that he would be going there, since I could give him free access (otherwise admission is quite high), and he's not really a regular museum goer. I was in the midst of my tour though, so I couldn't just walk up to him. He was walking past an exhibit looking at it and didn't see me; however, I was sure he'd notice me because I was talking loud and clear and had a large group of people around me. Plus he knows I work there, so I'd guess he'd at least look if that's me there. Anyway, a bit later I saw him again, he was walking up the stairs to another section of the museum where I was set to go with my group some ten minutes or so later. There is only this one access to that section, and it would have been almost impossible not to encounter him upstairs. I kept a lookout for him when I was up with my group and thought it'd be easy to find him. He was wearing a bright red shirt that I would have spotted immediately. However, in the twenty or so minutes I was up, I didn't see him anywhere. It wouldn't have been impossible for him to leave without me noticing, but highly unlikely. When my tour was over, I went through the entire museum to see if I could find him anywhere, but he was nowhere to be seen. I went outside and texted him, and he replied right away telling me he was home. He lives far out the city and if everything goes smoothly, it would have taken him at least an hour to get from the location of the museum to his place. I called him to see if he was playing a prank on me, but he was home. There was no background noise, and it would have been absolutely impossible for him to get to such a quiet location from the moment I saw him until when I called him. I know this area of the city like the back of my hand. Now, the most reasonable explanation would be that I saw someone whom I mistook for my brother. However, I was absolutely certain it was him. He has quite a distinct walk and posture. I actually thought to myself when I saw him how typical his way of going through the hallway was. He had a shirt on that I know very well, a bright red lumberjack shirt that is so dreadfully out of fashion that even hipsters stopped wearing it ironically around five years ago. What's more is that I looked specifically for that shirt all over the museum and didn't see it anywhere, there was only one guy with a red sweater I saw and it was nothing like it. I called my partner, who always has very good explanations for this sort of thing, and she suggested that I saw a person who reminded me of my brother so much that my mind added further information that it would have expected to see. I guess that's possible, but if this is so, it is nevertheless a very freaky experience. I'm a bit reluctant with this explanation though, because I saw him twice, and actually looked closer the second time, even though we were still quite far apart. The hallway and staircase are of monumental dimensions in this part of the building. However, the view was clear and I could look directly at him. And moreover, I just can't fathom the odds of someone looking so much like my brother and wearing the same ugly shirt, and then just disappear in a place I know so well.