Opposition Construct

[presleyclark]

The opposition construct on page 2-3 is confusing me.
My instructor uses the abreviations MBT: Must be true, CBF: could be false, CBT: could be true, and MBF: must be false.

Can someone explain to me this in relations to the opposition construct?

[Dave Killoran]

Hi Presley,

The following terms are equivalents:

• Must Be True = Cannot Be False
  
  Not Necessarily True = Could Be False
  
  
  Could Be True = Not Necessarily False
  
  Cannot Be True = Must Be False

This info helps decode the various things that the test makers tend to ask in questions. Collectively, these also cover the range of possibilities in situation dealing with truth. For me and for most students, thinking in Flaw tends to be tougher, so I automatically translate any term in False into it's True equivalent. So, if I get an LG question that says, "Which one of the following Must Be False, I instantly convert that to it's True equivalent, which is Cannot Be True. Then I know the right answer will be "Cannot Be True," and any wrong answer Could Be True (which allows for Must Be True).

Does that help? Please let me know. Thanks!