A dissertation proposal is an exercise most post graduate students who wish to specialize in a particular subject have to go through, especially to gain a doctoral degree. It cannot be written just by assimilating all the points you wish to convey and presenting in a logical manner. It entails a lot of structure and has to be formatted in a particular manner to convey all that you wish to readers.
When you choose dissertation topics, you would have already completed a detailed course on it to be able to do justice to a thesis on it. This logic applies when you have to prepare a proposal. You have to be well versed in the subject when developing a project. The proposal would be created in a manner which has all the ingredients to support a good dissertation.
