Is all conceptual art rooted in cowardice?

The story of the fake bomb at the Royal Ontario Museum has got me to thinking about modern or conceptual art.

Not surprisingly, my conclusion is that it is without redeeming value, but I'm going to try and go a bit deeper than that.

And in particular, I'm going to avoid simply calling Thorarinn Ingi Jonsson an idiot. Plenty of people are doing that already.