Explanation:
Advantages
1. Easier and likely better quality communication (although arguably difference forces one to examine one’s own culture more carefully , and may actually enhance how well you communicate its values ).
2. More global cooperation due to shared understanding of the world, shared goals, shared methodologies of achieving these. Arguably global cooperation requires a degree of similarity, values are shared in similar cultures.
3. Larger market for content (music, television etc) which is appealing to common interests and fads. Economies of scale achieved. More choice for consumers.
4. More predictability of other’s actions.
Disadvantages
1. Less diversity of ideas. Different cultures are powerful experiments in seeing how else a society could work and provide examples to challenge existing norms and status quo. They provide inspiration for changes within any given culture.
2. Less ability to escape one’s own culture if you don't like it.
3. Blandness in uniformity. Most of us are fascinated to understand how a totally different system works.
4. There may be some aspect of “specialisation” that comes out of having different cultures. So there could be a net economic loss from this factor (in isolation)
