Lexicon of Arguments

 

I 28
Individuals cannot be atoms. Atoms would be all identical because they have the same parts (namely none).
Solution: a solution is offered by the proper parts principle.
>Atoms/Simons.
Proper Parts Principle/strong/SSP/strong supporting principle: if x is not part of y, then there is a z, which is part of x, and separated by y. Problem: the interval [0,1) is not part of the interval (0.1] (or vice versa) but no part of [0,1) is separated from (0,1]. This means that overlapping intervals do not always have a unique product. However, extensionality demands that two overlapping individuals have a maximum common part. Solution: if x and y overlap, then all parts of the overlapping part are parts of x and parts of y.
I 109
Individual/SimonsVsGoodman (Leonard): not every still so abstract concept (plural term) should correspond to an individual.
But: to have identity conditions for every individual, is an excessive demand. That does not work in everyday life.
>Individual calculus.