# existential import ,and square of opposition [closed]

As far i understand existential import Aristotelian point of view universal statements should talk about things that are exist , But Boolean point of view say that we can talk about any thing . OK ?
But from both standpoints the word some implies existence .
so how they Treat the statement "some unicorns are red"
and why Boole make different standpoint of view in universal statements and keep particular the same as Aristotle ?

and by Boolean standpoint
All s are p = No member of s are outside p .
No s are p = No member of s are inside p .
and Venn diagrams will look like this

But How they will look like in Aristotelian point of view ?

then by existential import they make modern square of opposition
and only relation is contradictory i can understand why sub-alternation is
removed but i can't understand why another relation removed (sub-contrary ,
contrary )?

## closed as unclear what you're asking by Geremia, virmaior, Swami Vishwananda, Joseph Weissman♦Sep 14 '17 at 22:12

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