The name of Purandara, a Cārvāka philosopher, was unknown to modern scholars before 1914. It was from the editio princeps of Vādidevasūri's SVR that they came to know of a work called Paurandaraṃ sūtram along with an aphorism quoted from it: pramāṇasya gauṇatvād (sic) anumānād arthaniścayo durlabhaḥ. The SVR, however, does not seem to have attracted much attention. P.D. Gune in his introduction to the edition of Dhanapāla's Bhavisayatthakahā (1923) refers to a verse which mentions, among others, Akalaṅka and Purandara. He then quotes from the marginal notes on a passage found in a MS of Pupphadanta's Tisaṭṭhimahāpurisaguṇālaṃkāra which identified Akalaṅka as nyāyakārakartā and Purandara as cārvākamate granthakartā. G. Tucci noticed this reference and mentioned it in a paper in 1925. None of them refers to the SVR.

The aphorism quoted in the SVR was also found in Abhayadevasūri's TBV, first published in 1924 with a variant reading: pramāṇasyāgauṇatvād, etc., though there is no mention of Purandara in this work.

The aphorism itself, however, was not a discovery. It was known from the first edition of the NM (1895) but it was not attributed to any work called Paurandaraṃ sūtram. Prabhācandra also cited this aphorism in the PKM but spoke of the Cārvāka-s in general, not specifically of Purandara. Later it was found that others too had quoted the same aphorism without, however, naming Purandara.

The publication of the TS and TSP (1926) was an epochmaking event in many respects.