The structure of laminin antedates by many thousands of years traditional Christian accounts of the life of Jesus. A cross-like shape is a very simple structure that is commonly found in elements created naturally or accidentally.
Problem solving consists of using generic or ad hoc methods, in an orderly manner, for finding solutions to problems. Some of the problem-solving techniques developed and used in artificial intelligence, computer science, engineering, mathematics, or medicine are related to mental problem-solving techniques studied in psychology.
The general computational problem that needs to be solved in multiple regression analysis is to fit a straight line to a number of points. In the simplest case -- one dependent and one independent variable -- one can visualize this in a scatterplot.