*Firstly, the discoveries made regarding the Techelet have been inconclusive and the first two claims were later disproved and who’s to say that the new one which is claimed to be authentic will stand the test of time. Additionally, perhaps by the mere fact that for over a thousand years Jews haven’t used such a species for Techelet is a tradition that this species isn’t the correct one. Some sources even point to the fact that the secret of the Techelet was hidden after the destruction of the Bet Hamikdash. Lastly, how are we to determine the correct method in developing the dye if it’s disputed even in the early authorities and the dispute is left unresolved.
How Many Strings of Techelet Are Necessary?==
#The Radziner in Petil Techelet summarizes the dispute: ##Rambam holds that one string out of eighth are techelet.<ref>[https://www.sefaria.org/Mishneh_Torah%2C_Fringes.1.6/ Rambam Halachot Tzitzit 1:6]</ref> Sefer Hachinuch, Maggid Meisharim, Mabit, Maharam Ibn Gabay, Sefer Charedim, Levush, Gra, Sefer Hakaneh, and Arizal agree with the Rambam. Radziner in Petil Techelet ch. 6 ends up following the Rambam but says one has what to rely upon to follow either of the other opinions. Ben Ish Chai (Noach n. 17) and in [http://www.hebrewbooks.org/pdfpager.aspx?req=41237&st=&pgnum=101 Od Yosef Chay (Vaera n. 3)] holds like the Rambam. [https://www.ykr.org.il/question/1629 Rav Yonatan Mazuz] agrees. ##Raavad holds that one string out of four (two out of eight) is techelet.<ref>[https://www.sefaria.org/Hasagot_HaRaavad_on_Mishneh_Torah%2C_Fringes.1.6.1/ Raavad on Rambam Halachot Tzitzit 1:6]</ref> Aruch (Techelet) agrees with the Raavad. He cites the Sefer Haitur, Sefer Machriya, Tur, Rabbenu Yerucham, Shulchan Aruch Harav who agree. Smag has safek like Tosfot or Raavad. ##Rashi and Tosfot hold that four strings out of eighth are techelet.<ref>[https://www.sefaria.org/Rashi_on_Menachot.38a.4.1 Rashi on Mishna of Menachot 38a]</ref> [https://www.yutorah.org/sidebar/lecture.cfm/788501/rabbi-hershel-schachter/hilchos-tzitzis/ Rav Schachter ("Hilchos Tzitzis" beginning)] holds like Rashi and Tosfot and recommends all Ashkenazim to follow this method due to the plethora of sources advocating it (Baal haIttur, Tur, Shulchan Aruch, etc.).
==If the Strings Ripped==
*If all white tzitzit, [[Tzitzit#If_the_Strings_Ripped| click here]].
*According to the Rambam, if all white strings tore off up to the corner of the garment, and all that was left were techelet strings, the garment is still fit for use. <ref>[https://www.sefaria.org/Mishneh_Torah%2C_Fringes.1.4?lang=bi Rambam, Hilchot Tzitzit 1:4]</ref>