what is the purpose of discovery in a lawsuit
The purpose of pleadings is tell the other side what you intend to prove later, at trial. In Ontario, pleadings consist of a statement of claim, a statement of defence, and a reply. You put material (relevant) facts and legal conclusions following from these facts in your pleadings. The legal conclusions must support your request to the court. The purpose of a lawsuit is get a court order. Your facts and legal conclusions, if proven, must give the court the power to make the order you request. Running through a red light is a material fact; negligence is a legal conclusion.