For every kind of power, proofs may be sought by Pratyaksha (direct perception) or by the Anumana (process of inference). (SSS Vol.24, p. 36)
Anumana or inference is another form of proof. We see smoke on the top of a distant hill. We infer from the smoke that there must be a fire on the hill. Although we see only the smoke, we infer that there is fire. To infer the existence of the ‘unseen’ from the presence of what is ‘seen’ is Anumana Pramana (inferential proof). (SSS Vol. 15, p. 5)