"It is a symbol of Irish art. The cracked lookingglass of a servant." -- James Joyce
Hey, that is pretty good explanation.Of course the elasticity of a single farmer would differ from that of millions.It's amazing how in micro-econ, you find a deeper and more profound understanding of the most basic things. It's one of the subjects that is re-learnt from scratch over and over.
This is why physicists like dimensionless quantities so much.