- Everyday objects
- tables, chairs
- scientific objects
- strings, electrons
- mathematical objects
- numbers, sets, functions, groups, rings
Realists don't have to commit to all the objects.
- object exists independent of us
- the way they are in physical, scientific, or mathematical realm fixes truth
- truth doesn't depend on us
- we came to know those objects directly or indirectly (through some experiments)
- reason
$\implies$ rationalists - senses
$\implies$ empiricists
- reason
most are empiricists the senses only give ideas
- Idealism
- I have an idea of ..., but it is in me, not the world.
- tends to be egnostic about the existence of objects
- Nominalism: objects are names
- Fictionalism: objects are fictions
$\rightarrow$ objects may not be true - Constructionist: construct a proof of the existence of something.
- a object is true, false, or none/unknown before is is proved.