Cosmological Argument

1. Every being is dependent or self-existent.
2. If every being is dependent, we have either an unexplained infinite regress or an unexplained circle of dependent beings.
3. We don’t have an unexplained infinite regress of dependent beings.
4. We don’t have an unexplained circle of dependent beings.
5. So, not every being is dependent.
6. So, there is a self-existent being.

Rowe’s Worry

Premises 1 and 3 depend on the Principle of Sufficient Reason (PSR): every positive fact has an explanation.

Della Rocca’s Argument

1. Either (a) all the explicability arguments are bad, or (b) there is a dividing line between good and bad ones, or (c) all of the explicability arguments are good.
2. If all the explicability arguments are good, the existence argument is good.
3. If the existence argument is good, the PSR is true.
4. Not all the explicability arguments are bad.
5. There is no dividing line between good and bad ones.
6. So, all the explicability arguments are good. (1, 4 and 5)
7. So, the existence argument is good. (2, 6)
8. So, the PSR is true (3, 7)