Market Rational forces Vs Market Forces: Comparison.part five.

On the necessity curve or market need based curve of rational market,prices goes up in the vertical axis as demand goes up in the horizontal axis and essence of rational market guaranteed.To some extent only population of consumers might increase either by growth in population or changes in consumer tastes.Given the stability of price control system over the rational Market that hardly changes too quickly except through predisposed interval of changes by regulatory agencies,the factor of a change in the level of other prices may not be a factor unlike changes in income level, consumer taste, population of consumers and level of other prices as applicable factors attributable to shift in demand curve.