pt 45 s1 q 21

Comments

• jmac800 Member

  November 2015 94 karma

  Bump could someone answer?
• nye8870 Alum ⭐

  November 2015 1749 karma

  “There are many records of major meteor impacts that do not seem to have been followed by mass extinction.” Logically written:
  Major Meteor Impacts – some-> /Followed By Extinction
  When we negate, becomes:
  Major Meteor Impacts --> Followed By Extinction
  Ac(A) says logically: CCL --> (MMI --> FBE)
  I believe what it says in English is, “If there is a consistent causal link then Premise 3 is incorrect.”
  Try referring to this as well: http://7sage.com/lesson/the-negation/
  
  
• jmac800 Member

  November 2015 94 karma

  I'm unclear how negation of
  Major Meteor Impacts – some-
  
  becomes
  
  Major Meteor Impacts
  
  This is saying that the negation of some is all. I don't see the video you linked answering that. Some can include all. Ie. Some days it rains. What is the negation of this. All days it rains or not some days it rains. I believe it is the later, not some, and not some = it never rains. How can the negation of it rains some days be it rains all days? It is logically inconsistent.
• nye8870 Alum ⭐

  November 2015 1749 karma

  We need to negate some are -not-.... which is "all are".