There's a conference room on the first floor of the building I work in. I walk past it on my way to and from my office numerous times on any given day, and I attend a recurring meeting in their every afternoon. So I'm intimately familiar with the fact that the right of the two doors has been broken for some time. It won't open, no matter how hard you try. In fact, somebody has mindfully placed a pink "Sticky Note" on the broken side, with the simple instructions to "Use Other Door" and an arrow pointing to the left door. That particular room is often used for visitors attending campus events or large meetings. While those two doors are the only way in, there's a set of doors on the outside of the building that are exit doors leading from that room to the internal campus grounds. There's no external handles, just those on the inside, in case of emergency.
As I was walking into the building from the internal side after lunch, I came upon two visitors walking out of the building, looking for handles on those external doors and appearing bewildered and confused. I asked if they were trying to get into that room, they said yes, and as we walked back in together, I pointed them towards the internal doors.At which point they indicated that the sign there said to "Use Other Door".