When trying to create unity and a good learning environment, the environment plays a very important factor.
The selection of medium (written version vs. visual image) mostly affects the understanding of a theme. This is because the creator could create a detailed explanation using written medium but not with the visual image medium<span>. But, it all depends on the readers' knowledge to interpret the medium itself.</span>
Cassius doesn't want Mark Antony to say anything because he doesn't trust him and he thinks Mark Antony will make matter worse and make them look bad but Brutus allows him to because he believes it will show people that they are not evil and that they did everything in the good interest of Rome.
