Sketch and Collage

This sketch was made by heart so, mistakes must have occured:) Anyways, it's supposed to be São Paulo Metro (Subway, Tube...)



A very silly collage. Ah! A little explanation about *Ponto de Paretto* ( Paretto's Point/Pareto effiency ): In English

In Portuguese

And despite everything, I still continue to think Microeconomics is fascinating. ^.^