The appeal to novelty, also called argumentum ad novitatem, is the opposite of the Appeal to Antiquity. It is an argument that the novelty or newness of an idea is itself evidence of its truth. It is a claim that an idea or product is good — simply by virtue of being novel or new.
Since every rejected idea in the history of man was once a “novel idea”, the fallaciousness of this argument is apparent. Moreover, every good idea was once novel. But it takes time to determine whether the novel idea is useful or not.
Example of the appeal to novelty
If you want to lose weight, your best bet is to follow the latest diet.