A hólabdafolyamatról - még egyszer.

The Snowball is a diffusion-type, nonlinear autoregressive process. Its solution for the time variable (which is available only in certain cases) yields a growth function with saturation level, similar to the logistic, or the Gompertz functions. First time, the snowball process was described by me, in the 70-s, but this trial remained without any echoes of the model-builders. In the last 40 years, the rapid development of informatics made us possible to analyse problems that are difficult to handle analytically. So, the possibility to analyse some problems of the snowball process has been realized. The article gives an example of these, but its focus is on the application of the snowball model. Three different social-economic events (the diffusion of the mobile phones, the COVID, and the war-inducted inflation of the last years) are examined here. [ABSTRACT FROM AUTHOR]