IZ: I recently dealt with these 2 objections – cost; single cord – in this group. Can you locate them?
Regarding the singular petil issue, how would they design a tzitz with one petil?
RH: A cord can have many strings. In the case of a Ptil there’s a disagreement whether Ptil means a rope-like cord or a flat, “gartel” like item. Ptil Tekhelet/The Temple Institute have both versions designed: What Exactly is a Psil, as in Ptil Tekhelet?
DA: IZ see the tzitz according to the ramban and rambam with only 1 psil. Rashi because of the apparent stira in the pesukim says there are 3. (If I had to guess I would say the this was a chidush of rashi. He notes this design in both tetzaveh and pikudei where he does not go into much detail at all which leads me to think it was a chidush which he had to clarify multiple times)
RH: IZ this comment of yours was also in the discussion of my humorous “okay boomer” picture before:
But Rashi does not quote this Sifrei as his source. On the contrary, he presents his own clear logic, proving that the word petil refers to the commodity (i.e.spun and wound cords of textile) without defining how many pieces. Accordingly, the remark of the Gera is irrelevant to the issue.
It seems that Rashi’s Shita involves an equal status for the white and tekhelet threads in tsitsit, 4 of each. Accordingly, התכלת לא מעכבת את הלבן והלבן לא מעכב את התכלת.
Therefore, a tsitsit without white but with only 8 tekhelet is fine.
I don’t see where in this group you address the cost though, other than in general as a commodity it was prized and monopolized.
I do see from this piece you published (https://www.tekhelet.com/pdf/0177.pdf) you do point out (p. 4) that Justinian monopolized certain markets like silk and purpura goods. So expense definitely was a factor.
IZ: RH thanks.
Regarding the cost. I have already written somewhere that the cost is a one-time expenditure, while the fulfilling the mitzvah is a daily event. If you divide the total cost by the number of times you fulfil the mitzvah of tzitzit, then the daily cost will be less than the additional net cost per day that one is required (1/6 ?) to fulfil hidur mitzvah.