I just came across an unbelievably crappy argument in a scientific debate between two professors. I must keep the details obscure, but the basic form of the exchange follows.
X: I have discovered that tomatoes were grown in Ireland in the Neolithic.
Y: That is highly unlikely. The seeds and leaf remains that form almost the entire base of your assertions belong to turnips. Just check out these pictures for comparison.
X: Professor Y subscribes to an earlier Kuhnian paradigm than myself. Therefore his work is incommensurable with mine, and he is by definition unable to criticise me. I remain convinced that tomatoes were grown in Ireland in the Neolithic.
I tell you people, I am reeling.