There are a number of leading dependancy theories that is public and accessible. Two of the leading are media and sociology. To check out other theories please check out "Uses and gratifications theory".
some one who wanted to take advantage of the weak and thrive on it
It depends on what you mean by leading. A few good candidates are string theory, the standard model and loop quantum gravity.
The Dynamo Theory it what causes Earth's Magnetic Field
Max Weber
Karl Marx
Max Weber.
The Big Bang
Starvation
Robert Timsol has written: 'A pessimist in theory and practice' -- subject(s): Accessible book
Robert Daniel Carmichael has written: 'The theory of numbers, and Diophantine analysis' -- subject(s): Diophantine analysis, Number theory 'A debate on the theory of relativity, with an introduction by William Lowe Bryan, favoring the theory' -- subject(s): Relativity (Physics) 'The theory of numbers' -- subject(s): Accessible book, Number theory
The leading theory concerning the mechanism of evolution is natural selection.
Jack Bazer has written: 'Geometrical hydromagnetics' -- subject(s): Accessible book 'Potential flow through a conical pipe with an application to diffraction theory' -- subject(s): Accessible book 'Multiple scattering in one dimension' -- subject(s): Accessible book