Tamper Meddle with; to alter something or damage it. Titan Saturn's largest moon Valid In the context of the film, a 'valid' is a genetically engineered individual Invalid An 'invalid' is an individual conceived naturally; not genetically engineered Genuism Discriminating against an individual based on their genes Unscrupulous Dishonest or unfair Myopia A condition of the eye, commonly called short-sightedness Faith-birth Another term for invalid. Also called a God-child. Borrowed ladder An invalid who adopts the identity of a valid, impersonating them through posession of their genetic material De-gene-erate A derogatory term for a borrowed ladder. It is also a play on the word 'degenerate', meaning an individual of exceedingly low status Flat foot A colloquial, derogatory term for a police officer.