Toppled Pyramid - "no such thing as the Islamic economic system"

My dear brother "Chancellor impersonator", I am not trying to be deceptive, I am merely highlighting that actually there is no such thing as THE Islamic economic system, merely many Ijtihadaat performed by mostly modern thinkers about how potentially to run an Islamised economy reconciled with modern paradigms of politics and economics. If you have studied economics you would know that most of it's concepts are new and weren't discussed in classical Islamic literature at all. thus, when the bro (abdur Rahman) referred to THE Islamic economic system that was implemented in the past, my point was...that there was no one model that was implemented, and therefore its absence isn't Kufr!