How could you not expect this to happen?

Wall in the "Wonder Gallery" at Science World, Vancouver

Warning sign on the wall in the "Wonder Gallery" at Science World, Vancouver

I was a bit surprised to see this sign.  The "Wonder Gallery" is designed for 0 to 5 year olds. One thing that children that age love is climbing. They will climb anything, anywhere, anytime.

And the designers of this installation must have known that children would try to climb it. So, why not design and build a wall that could be climbed, rather than create something that can't be climbed, and then putting up a sign prohibiting the very thing that you know the children will do?