accounting under ideal condition

Hi again, 

please i need answer for the following Q, as a mudel answer. 

- Given that in reality ideal conditions of markets are unlikely to hold, critically appraise whether the single measurement bases information is appropriate? 

please i need the answer to be as following.

1- Definition of ideal condition

       -  Perfict and full information

       -  compatitive equilibrium

2- advantage of ideal condition

    - single measurement

             A - Consistancy

             B -  Compavability

3- imperfect market defintion

             A- information asymmetry

Note: i attached one jurnal artical could be helpfull.