Breaking promises. The Hungarian experience

My main aim is to present the phenomena related to fulfilment and breach of promises and the economic, political and ethical problems arising from these. I discuss questions that we all meet with in daily life and see mentioned in the press, other forums of public discourse, gatherings of friends, or sessions of Parliament. There are some who complain that a building contractor has not done a renovation job properly according to contract. Economists argue over the outcome of late repayments on loans advanced for purchasing real estate. Opposition meetings chide the governing party over unfulfilled campaign promises. I am seeking what is common among these seemingly different cases. Can we see identical or similar behavior patterns and social mechanisms in them? Do they lead to similar decision-making dilemmas and reactions?