Sign on the Wall

So, I enjoy going to the local art museum, but sometimes I come across things that I just don’t get.  Like this sign:

ISO 4.3mm f/2.7 1/5

I added a cloth feel and border in post-editing.  But there are some things at work here that I don’t get like, what does the saying on the sign mean even?  The bigger issue here for me though, was it’s placement.  It is in a stairway, no other items on the all, it just seems kind of random.  A random thought for a random wall? or did someone think this through and decide on this place in particular for this sign?  You could start a whole argument about what is art just with this sign I think, and maybe that is the point?

Just odd if you ask me.

Cheers!