If you meet people with aggressive philosophy, you would know that a win-win situation is not possible with them, because they will only care about their
comfort, not about other's comfort.
Assertion on the other hand is totally opposite, in such a way that it is all about making a win-win situation for both the parties involved.
For example, while having a business proposal meeting with a client, a manager would try to make sure that his client understands what value addition he is going to achieve through this business need.
Here, a manager is supposed to make sure that his client understands that both parties are getting the benefit, which is going to help his organization to support this transparent and honest relationship with his clients. He also has to make sure that he makes expectations and benchmarks clear to his client, so that his client cannot take undue advantage of him.
Another common case where an assertive philosophy makes a huge difference would be making a deal with a landlord while taking a house on rent. Landlord would be naturally aggressive, but in the process he might risk the potential long-term relationship with his tenant. If both parties are polite and honest but upfront enough the issues and concerns between them, then it will lead to a long-term relationship between the two.
Why people adopt aggressive philosophy
According to some psychologists, there are five reasons why people adopt aggressive philosophy
These are some irrational and random thoughts/acts which causes harm to the individual himself or others. They are caused by frustration due to lack of fulfillment of fundamental, biological or psychological needs. For example, some people may get adopt aggressive philosophy because of how they are treated in society at large if they belong to a caste which is lower in that society's caste hierarchy.
(Fortsetzung, bitte sh. die Suchfunktion)