... used so often as a valid reason to justify this claim ... frequently** then the justification is valid. But obviously this is not ... it is at all a valid way of supporting the argument ...
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If sufficient fails then no valid conclusions about the necessary condition ... hence we can have a valid conclusion.
If necessary ... hence we can have a valid conclusion, but if necessary ... satisfied or affirmed then no valid conclusion.
Hey! Perhaps a silly question, but is there a tool on the drills page to draw things out for LR questions? I have been searching for a pen tool to map things out, but I only have access to highlighters.
... true if the argument is valid. Please note that "the argument ... is valid" is different from "the premise ... for the argument to be valid the conclusion must derive its ... and the existing conclusion) a valid argument. In other words, if ...