Scientia potentia est A Sponti (Außerparlamentarische Opposition) version of the slogan is "Wissen ist Macht, nichts wissen, macht auch nichts", a pun about the previous motto along the line "Knowledge is power, but being ignorant doesn't bother anyway". Joschka Fischer and Daniel Cohn-Bendit belong to those Spontis that nevertheless held powerful positions, in Fischer's case with no more formal education than a taxi driver's licence. The German Bundeswehr Bataillon Elektronische Kampfführung 932, an electronic warfare unit based in Frankenberg (Eder), still uses the Latin version "Scientia potentia est" as its motto. Though its meaning varies from author to author, the phrase often implies
Non est factum generally that: "Non est factum" is difficult to claim as it does not allow for negligence on the part of the signatory, i.e. failure to read a contract before signing it, or carelessness, will not allow for "non est factum". Furthermore, the Court has noted that there is a heavy onus that must be discharged to establish this defence as it as an "exceptional defence." In "Petelin v Cullen" (1975), the defendant, Petelin, was illiterate and could speak very little English, but still signed a document he believed to be a receipt for $50 but actually gave Cullen the option