E Unpleasant weather would not permit me to come,
E This weather is not unpleasant,
A ∴ This weather enabled me to come.
Fallacy of two negative premises.
(4) “If one pays his debts, he will not be ‘black-listed’; but since you are ‘black-listed,’ I conclude that you have not paid your debts.”
Arranged logically and antecedent and consequent indicated:
If one pays his debts (antecedent), he will not be “black-listed” (consequent);
You are “black-listed,”
∴ You have not paid your debts.
The minor premise denies the consequent hence the argument is valid.