What is the difference between opinion essay and discussion essay?

The first difference between discussion and opinion essays is that here you do not need to write a thesis statement in the introduction. You may give your opinion in the conclusion. When writing discussion essays, we use the evidence-based approach.

What is a good theory?

A good theory in the theoretical sense is (1) consistent with empirical observations; is (2) precise, (3) parsimonious, (4) explanatorily broad, and (5) falsifiable; and (6) promotes scientific progress (among others; Table 1.1).

Is anti gravity possible?

Many people seem to think NASA has secret training rooms in which gravity can be turned off. Aside from the long-running Anti Gravity column in Scientific American, however, there is no such thing as antigravity. Gravity is a force arising among any two masses in the universe.

Can we create gravity?

Ryan: As far as anyone knows, there is no way to produce gravity other than with mass. Things that have mass have a certain amount of gravity and will interact with other things that have mass. By rotating a city in space you would not create gravity, you would simulate it.