Ключевые слова: background, balance, banking, bill, business, card, cash, chance, concept, construction, crisis, currency, debt, depression, economic, economical, finance, financial, fragile, fragility, game, group, harmony, house, idea, imbalance, investment, isolated, luck, money, mortgage, order, paper, pyramid, recession, risk, ruble, savings, shape, sign, stability, stable, success, wealth, white, winning,