The focus of such an essay predicts its structure. An effective description of the context, situation or problem can demonstrate why the thesis is interesting and worth arguing.
Make it clear why they don't work, and show your research. Staring at a blank page for hours is not a way out.
The best way to do so is to present how the things would turn without your idea being implemented ASAP. For example, a persuasive essay will say that cities should take up more recycling programs. It is not a contract, though—the order in which the ideas appear is not a rigid one. These terms may be crucial in your larger analysis and, if for no other reason than this, must be defined even tentatively before you can hinge your arguments on them.
Argumentative Essay Topics Topics for this type of essay can vary a lot, as any subject can use this format.