All occasions are functions. No function is an event A + E ⇒ E - type of Conclusion “No occasion is an event.” Conclusion (4) is the Converse of it. All incidents are occasions All occasions are functions A + A ⇒ A type of Conclusion “All incidents are functions." This is Conclusion (5). All incidents are functions No function is an event. A + E ⇒ E - type of Conclusion “No incident is an event.” Therefore, some incidents cannot be events. Conclusion (2) does not follow. No event is an occasion All occasions are functions. E + A ⇒ - type of Conclusion “Some functions are not events" Its venn diagrams
Venn diagram II supports the Conclusion (1).If “No happening is an event", then some (a part) happenings are also not events. Therefore, Conclusion (3) follows