A rule of inference that requires an unjustified auxiliary premise to function is not a self-standing inferential principle but a disguised appeal to the very probabilistic reasoning it purports to ground.

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Based on where you are in your exploration

Existing independently on its own, without needing something else to support or define it.

Unjustified(as describing beliefs that don't have reasons backing them up)

Lacking reasons or evidence to support why you believe something; accepted without proof or explanation.

ground(Contrasted with mere necessary conditions for rightness)

That which makes an act right; the basis of rightness or obligation

probabilistic reasoning(as a type of logical argument people may not be good at following)

A way of thinking that uses probability and statistics to figure out how likely something is to be true, based on evidence and what you already know.

rule of inference(in logical proof construction)

A step-by-step instruction that tells you how to derive a new true statement from statements you already know are true.

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