@leafy,

leafy;104388 wrote:Right. Take a few examples of formal fallacies:

Affirming the consequent:

1. P→Q

2. Q

3. :. P

"Argument from fallacy":

F: *x*

All circular arguments beg the question, but not all cases of begging the question are circular arguments. For instance, the following argument;

1. All abortion is murder

2. All murder is wrong.

Therefore, 3. All abortion is wrong,

Begs the question. But it is not circular. The conclusion is not included among the premises. But it does beg the question, for 1. needs proof, and no one would accept 3 unless he accepted 1.