Bank deposits are credited on the date of the transaction only when they are made before 3 P.M. Alicia knows that the...

Irina August 7, 2019

@Julie,

"Only if" generally introduces a necessary condition, so in a statement:

A only if B,

B is a necessary condition, thus if B is false, A is also false:

~ B - > ~A
~HR -> ~ GSS

IF NOT Helen resigns THEN NOT George shift supervisor

and A is a sufficient condition, thus if A is true, B must also be true:

A -> B
GSS -> HR

The whole argument can be diagrammed as:

GSS ->HR
HR
_________
GSS

This is a flawed argument that exhibits a logical fallacy of affirming the consequent.

Does this make sense?

Let me know if you have any further questions.