The binding legal principles are: (1) Ostensible authority may be pleaded in particulars of claim where the plaintiff is aware the defendant will deny actual authority; it need not be raised only by replication. (2) To establish ostensible authority (whether viewed as estoppel or not), a plaintiff must prove the principal by words or conduct created an appearance that the agent had power to act on its behalf. The representation must emanate from the principal, not merely the agent, though the agent's conduct within their actual or ostensible authority may constitute the representation. (3) Agreements to negotiate in good faith are enforceable where they contain a deadlock-breaking mechanism to resolve disputes if negotiations fail. (4) Under section 39(2) of the Constitution, 'debt' in sections 10(1), 11(d) and 12 of the Prescription Act 68 of 1969 must be interpreted narrowly to promote the spirit, purport and objects of the Bill of Rights, particularly the right of access to courts in section 34. (5) 'Debt' means something owed (money, goods or services) that a debtor can unilaterally discharge by payment, delivery or performance. It does not include every obligation to do or refrain from doing something. (6) An obligation to negotiate in good faith is not a 'debt' for purposes of prescription because it cannot be discharged by unilateral payment, delivery or performance, but requires bilateral participation.