What is something you have learned how to do after watching someone else?

Atremendous amount of learning happens through this process of watching and imitating others. in psychology, this is known as observational learning. observational learning is sometimes also referred to as shaping, modeling, and vicarious reinforcement.
an example:
if we closely observe the techniques and remember those and try to re draw, there will definitely be improvement from previous draw.

Urban growth invariably feeds increased commercialization and industrialization. it requires continually expanding land areas. when urbanization rates are high, and countries do not have the institutional and managerial capacities or economic wherewithal to manage such rapid growths, they exert intense pressure on the types and nature of the resulting settlements. they contribute to the development of overcrowded slums and shanty towns without adequate essential services and necessary infrastructure.-by asit k. biswas and cecilia tortajada