Tricks and convincing arguments don’t help any more.
So cost alone is not necessarily a convincing argument in favour of universal banks.
If nobody can find more convincing arguments in favour of the Lisbon treaty, the EU as a whole may yet find itself whistling in the dark.
The philosopher Rene Descartes (" I think therefore I am ") had made the convincing argument of mind-body dualism.
I've heard some convincing arguments in favor of converting to electric cars.