Are you seeing what I’m seeing?

What are you seeing and, more importantly, what are you missing?  We laughed at our room-mate the other day because when my husband commented about the chair in the hallway (it stops our dog running into the wall), she asked “what chair?  She had been completely unaware of it, despite living here for 6 weeks already. I explained that it was a common phenomena and we often don’t see everything in our surrounds.  That explains why you can’t see the jar of honey or jam standing right in front of you while looking in the cupboard or fridge.  I’m sure