What are the differences and connections between the ideals of different times and the reality at that time?

Different social backgrounds and values, different technical and economic conditions, different conflicts between ideals and reality.

1. Social background and values: Social background, cultural traditions and values of different times have had a profound impact on people's ideals. Ancient society often emphasized morality, family and religion, while modern society emphasized values such as individual freedom, equality and scientific and technological progress.

2. Technical and economic conditions: With the passage of time, great changes have taken place in the technical level and economic conditions, which have affected people's pursuit of ideals. In the past, flying was an unreachable dream, but with the development of aviation technology, flying has become a reality, which has changed the way people know the world.

3. Conflict between ideal and reality: There are conflicts or contradictions between ideal and reality in any era. Although people have various beautiful visions and goals, due to various constraints (such as political system, resource allocation, etc.), their ideals are not always fully realized.