Scientist: Any theory that is to be taken seriously must affect our perception of the world. Of course, this is not, in itself, enough for a theory to be taken seriously. To see this, one need only consider astrology. The point of the scientist's mentioning astrology in the argument is to present ['an example of a theory that should not be taken seriously because it does not affect our perception of the world', 'an example of a theory that affects our perception of the world, and thus should be taken seriously', 'an example of a theory that should be taken seriously, even though it does not affect our perception of the world', 'an example of a theory that should not be taken seriously despite its affecting our perception of the world']