they have to avoid it? >> great question. they are called opening statements and closing arguments. you are actually not permitted to argue in your opening statements. what you can do is lay out the road map. what you expect the evidence will be but you cannot, for example, say, i want to argue the inferences that you will be able to draw from the evidence. you have to say that for closing arguments. >> on his way out of court yesterday, donald trump was asked about his plans to testify. let us take a look at the moment. here it is. >> what you testify? >> yes. >> there he put it, plain and simple. could his attorney stop him if he really wants to take the stand? >> reporter: there are no sure