Bearing this story in mind, we can understand the reaction of some to the desire of the Women of the Wall (WOW) to hold a women's prayer service on this Sunday, the New Moon of Tammuz. Organizations such as Women for the Wall (W4W) see the tallit worn by WOW as analogous to the tallit of tekhelet worn by Korah: a heretical stunt for the purpose of undermining the Torah.
The search for tekhelet continued, as an academic curiosity, until about 30 years ago, when Otto Elsner of Shenkar College and Ehud Spanier of the University of Haifa managed to put all of the clues together and identify the process for extracting tekhelet from the Murex (Hexaplex) trunculus. This tekhelet was first commercially available in the 1990's, and that's when I started using it. I thought that the mainstream Jewish world would follow, but it has not. Why? Some halakhic objections have been raised, but it mainly boils down to a rousing chorus of: "Tra-DI-tion! Tradition!" Our holy rabbis weren't bothered by the lack of tekhelet, so why should we be? Why do we need this strange innovation when the old ways have served so well?
And that's what the objection to WOW boils down to as well. As the estimable Dov Bear has pointed out (http://dovbear.blogspot.co.il/2013/05/some-more-arguments-on-behalf-of-women.html), Rav Moshe Feinstein (Iggerot Moshe, OH 4:49), a halakhic authority whom no one would accuse of being feminist or liberal, ruled 40 years ago that a woman may wear a tallit and make the blessing over it, just as she may do so for the blowing of the shofar, as long as she has the intent to draw closer to God by this. The true objection comes not from Halakha, but from "normative Orthodox practice," whatever that means--the kind people kept telling me I was contravening by wearing this newfangled tekhelet.