Idea over another is known as a promotion bias. It is a cognitive bias that occurs when individuals or groups selectively promote information or ideas that support their own beliefs or agenda, while ignoring or downplaying contradictory information.

Promotion bias can occur in various contexts, such as politics, marketing, or scientific research. In politics, for example, politicians may selectively promote information or policies that align with their own party's agenda, while disregarding opposing viewpoints. Similarly, in marketing, companies may promote positive reviews or testimonials for their products, while ignoring negative feedback.

In scientific research, promotion bias can occur when researchers selectively publish or highlight studies that support their hypotheses, while neglecting to publish studies with null or contradictory results. This can lead to a skewed understanding of a particular topic or phenomenon.

Promotion bias can have significant consequences, as it can perpetuate misinformation, reinforce existing beliefs, and hinder critical thinking. It can also lead to a lack of diversity in perspectives and hinder progress in various fields.

To mitigate promotion bias, it is important to engage in critical thinking, seek out diverse sources of information, and actively consider opposing viewpoints. It is also crucial to promote transparency and open discussion, allowing for a more balanced and comprehensive understanding of complex issues.

Regionalism is a particular ideology that focuses on the intrest of particular region,group of region or other subnational entity.