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Recently, Wang $et$ $al.$ have reported the observation of "unconventionalsuperconductivity" in the Weyl semimetal TaAs [arXiv:1607.00513]. The authorshave written "\textit{A conductance plateau and sharp double dips are observedin the point contact spectra, indicating p-wave like unconventionalsuperconductivity. Furthermore, the zero bias conductance peak in lowtemperature regime is detected, suggesting potentially the existence ofMajorana zero modes. The experimentally observed tunneling spectra can beinterpreted with a novel mirror-symmetry protected topological superconductorinduced in TaAs, which can exhibit zero bias and double finite bias peaks, anddouble conductance dips in the measurements}." In this comment we show that fora superconducting point contact, the features like a zero-bias conductancepeak, a plateau and single or multiple conductance dips might arise due tosimple contact-heating related effects. Such features are routinely observed inpoint contacts involving a wide variety of superconductors when the experimentsare not performed in the right regime of mesoscopic transport. We also showthat the data presented by Wang $et$ $al.$ in a single transport regime ofpoint contact do not confirm tip induced superconductivity (TISC). Even if itis assumed that Wang $et$ $al.$ achieved TISC on TaAs, all the spectra thatthey have reported show striking similarities with the type of spectra expectedin thermal regime of transport. Such data cannot be used for extracting anyspectroscopic information and based on such data any discussion on "p-wave"superconductivity or the emergence of Majorana modes should be consideredinvalid. This version (v2) also includes a brief discussion on the response ofWang $et$ $al.$ to the first version (v1) of this comment. Correct ballisticregime data on TaAs point contacts can be found in arXiv:1607.05131 (2016).

Comment on "Tip induced unconventional superconductivity on Weyl semimetal TaAs" [arXiv:1607.00513]