General Weaken question

[Basia W]

Hello,

I am trying to remember- how should one approach a weaken question that contains sufficient and necessary indicators? Do we show that the necessary condition does not necessarily follow? I know that weaken stems often deal more with causality.

Thank you for the refresher,

best.

Basia

[Jon Denning]

Hey Basia,

To weaken conditional reasoning you simply show that the sufficient doesn't actually depend on the necessary. So to weaken "if A then B" we'd just show A without B, meaning B isn't really required and the argument is incorrect.

I hope that helps!