Can We Reinstate Lost Traditions, Such As Techeiles?

Rav Hershel Schachter on Tekhelet

Published on Aug 25, 2013
Rav Schachter talks about three aspects of tekhelet: (1) Should one wear it even if it is only a safek (doubt)? (2) Can we reinstate a halacha when the tradition was lost? (3) How does he suggest one tie the tekhelet?
From YouTube, here.