Revolving Doors

I dropped into my friend Duncan’s work today and to get into the building you had the option of going through a revolving door. Now I don’t know if I have simply stopped noticing them, or if they have kind of gone out of fashion, but I don’t recall the last time I went through a revolving door, and I found the experience highly, well I suppose the terms “fun” and “nostalgic” best describe it.