Next to it: an accelerated excerpt from the course material intended for medical students..

The goal is to illustrate concepts from biostatistics used in epidemiological research, using simulations of populations.

It is not a matter of popularizing these concepts per se, but rather of helping students understand what certain complicated concepts mean when applied to the study of risk factors for a disease.

The video aims to illustrate difficult but major concepts of association (and strength of association), confusion, and interaction (in additive and multiplicative models), by visually varying the composition of populations to see the impact on ratios and differences.