Philosopher AI
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Why am I happy
All things are ultimately made of atoms, which is to say that all things are built on a foundation of solid matter. When you think about it, the concept of 'solid' seems rather nebulous and abstract. We have names for solids such as wood or steel, but we cannot pick these up with our fingers and feel them in our hands. Atoms themselves do not seem to be solid at all; they are little spheres filled with smaller particles whizzing around at high speeds.
What about gases (air)? They appear to be amorphous, not solid at all. Yet we know that they are made of atoms, even though the atoms themselves seem too small to see with our eyes and do not form any kind of structure larger than a molecule. To pick up air in your hands would mean picking up billions of invisible gas molecules as well.
How about liquids? Water, for example. We know it is made of atoms because we can break water down into hydrogen and oxygen gas by using electricity or fire to separate the molecules, but what does it mean for water to be a solid?
When water freezes, it becomes a solid. It is not just the temperature of the water that changes: its physical state also changes.
Solids have a fixed shape and volume. They stay where they are when left alone, and if you attempt to move or push them by hand, they do not budge.
Liquids, on the other hand, can flow and take the shape of a container. They are not confined to one fixed shape or volume.