


I think many of the Gedolim who lived before the Radziner zatzal and wrote that Techeiles will be lost until Moshiach comes and brought explanations from the revealed and hidden Torah would have changed their minds if they had read the words of the Radziner zatzal or if they had subsequently been convinced by the evidence that we have now or by other evidence.
They assumed Techeiles would be revealed along with all the other things that Eliyah HaNovi and Moshiach will reveal and found explanations for what they assumed was true then.
Before Charles Darwin, Gedolim accepted what science had to say.