Thesis: people are more likely to look at the last sentence of a text when they are instructed to. A hypothesis is nothing more than a thesis where you state what you expect to conclude after your research. So you always formulate a hypothesis before actually conducting your research. What is exactly the difference between a thesis and a theory? Easy! A theory is based on data you already have. In addition, you can apply a theory to several things and a hypothesis only applies to one thing. And was I right?