Arguments like TAG and the modern Ontological argument are challenging because whilst they are quite obviously fallacious, it is often harder to say why.
As Bertrand Russell wrote (in regards to the Ontological argument):
"The argument does not, to a modern mind, seem very convincing, but it is easier to feel convinced that it must be fallacious than it is to find out precisely where the fallacy lies."
As Bertrand Russell wrote (in regards to the Ontological argument):
"The argument does not, to a modern mind, seem very convincing, but it is easier to feel convinced that it must be fallacious than it is to find out precisely where the fallacy lies."