The $ell refers to the evolutionary stage which we inhabit at the moment, the market plays a role in determning the viability of things.
Although it seems to be a product of our endeavour to create and civilise the world, t has become a global entity that influences things fundamentally just like the weather does, at the evolutionary level it increasingly affects all development by determining survival of species rates.
The global market has become almost like a living entity in itself, as cruel and yet vulnerable as an organism, it can work for us like bacteria in the intestine or it could kill us like a deadly disease. The title indicates the juxtposition of concepts in that the $ell can mean to sell, or it could mean a biological cell, a fuel cell or even a prison cell.
