Modelowanie preferencji a zagadnienia zrównoważonego (trwałego) rozwoju

In the paper the selected review of main research directions and basic statements from the area of evaluations and comparisons of long-term project is given as well as - questions concerning an adjustment of discounting functions to the "true" fluctuations of individual preferences (in the passage of time) are asked. The above research is carried out in two (complementary) planes. At first the analyses of preorders in sets of infinite sequences of (instantaneous) utilities are shortly reported. The subject of the second part of the article is an identification of the analytical shapes of the "exact" and "justintergenerational" discounting functions.