Matthews' delusions had a definite political slant: he claimed that the purpose of this gang was espionage, and that there were many other such gangs armed with Air Looms all over London, using "pneumatic practitioners" to "premagnetize" potential victims with "volatile magnetic fluid". According to Matthews, their chief targets (apart from himself) were leading government figures. By means of their "rays" they could influence ministers' thoughts and read their minds. Matthews declared that William Pitt was "not half" susceptible to these attacks and held that these gangs were responsible for the British military disasters at Buenos Aires in 1807 and Walcheren in 1809 and also for the Nore Mutiny of 1797.