I once even thought I had seen my late grandmother. Can science explain my overfamiliarity with strange faces? I once even thought I had seen my late grandmother. Can science explain my overfamiliarity with strange faces? W hen I was in my mid-20s, I spotted my grandma through the window of a coffee shop. I was dumbstruck – she had passed away the year before. I stared for a moment, then reminded myself it couldn’t be her. I’d had similar experiences all my life. Every now and then, I “