A good way to establish a conclusion as true, or probable, is to

A scientific hypothesis is

One way to disconfirm the scientific hypothesis that chickens cannot fly would be to

Examining reasons and constructing arguments can help in

A radical skeptic might be willing to doubt which of the following?

Putting an argument into premise-conclusion form can make it easier to

Descartes worried a great deal about the threat posed by which of the following?

Logic can help analyze ethical problems.

A strongly supported claim in science should be regarded as

To support a scientific hypothesis, one might