ng question concerns how to predict consumption behavior and assumptions about how consumers make decisions when the country's economic environment is worse in this year. If the country's consumers are not always rationally maximizing some kind of utility function, when the country's economic environment is worse in the year, whether what other factors will persuade them to raise consumption desires? Can they still claim that their decisions to make purchase too much non-essential products or consumer too much non-essential entertainment service are always in their own best interest when the country's economic environment is poor in the year? Usually any product manufacturers/service providers commonly rely on the competitive process to produce the consumption market outcomes that are have the most favorable to consumers. But, if the country's consumers will be influenced to decline consumption behaviors by worse economic environment factor influence generally.In a model of rational behavior, the country's firms in a competitive environment compete mostly on the merits and the country's overall consumption market outcome is lesser efficient and welfare maximizing to consumers, due to worse economic environment factor will influence the country's overall consumption desires to be declined. Does this result continue to hold when the rationally consumption assumption about the country's consumer behaviors generally?It means that whether the country's current year worse economic environment factor will influence the country's consumer rational individual consumption behavior dependently. Will the country consumer individual consumption decision-making process be influenced by economic environment changing factor easily?For example, a rational consumer recently knows how much who would be willing to pay to rent or buy a bicycle during a stay in UK next year. The planning rent or purchase a bicycle consumer is in a position to sign a contract today that who regret to rent or purchase a bicycle in UK next year. What factors will influence the planning rent or purchase a UK bicycle consumer to sign a contract today? The factors may include, such as the average price of the UK bicycles that who will observe in UK when who gets there are external to whose utility and are not supposed to have an effect on whose enjoyment of the contract.Individuals can therefore rank at any time, all possible choices according to whose riding bicycles in UK enjoyment tastes. So, the planning rent or purchase UK bicycles consumer, who won't be only influenced to choose to rent or buy one UK bicycle to ride when he/she will stay in UK next year by whose country's current year worse economic environment factor. So, UK's bicycle average sale price and bicycle rent price factor will influence the planning rent or purchase UK bicycle consumer chooses either rent or buy one UK bicycle or not rent or not purchase one UK bicycle for whose personal entertainment needs during he/she will be staying in UK next year. So, it implies that the UK travelling planner won't be influenced to cancel whose renting or buying one UK bicycle for whose entertainment need during he/she will be staying in UK next year by himself/herself country current year sudden worse economic environment changing factor. Otherwise, his/her renting or buying one UK bicycle decision which will be influenced by the UK bicycle average sale price and rent price changing factor.Hence, I assume that worse economic environment factor won't easily influence consumer individual consumption desire to be decreased, when who feel the product or service can maximize the level of welfare benefits to whom.