[Avodah] following mesorah

[rabbirichwolpoe at gmail.com]

RET
> http://www.tzemachdovid.org/thepracticaltorah/bo.shtml
> among those who agree with Rabbeinu Tam are Rabbeinu Chananel, Rav Sherira
> Gaon, Rav Hai Gaon, and the Rif; the Rashba (Sheilos V'Teshuvos HaRashba
> attributed to the Ramban Siman 234) cites Rav Saadyah Gaon as concurring
> as well.

> On the other side, the Rashba himself (Ibid.) concludes that Rashi's
> order is correct, adding that Rabbeinu Yonah and the Ramban held that
> way too; the Sefer HaChinuch (Mitzvah 421) also accepts this position,
...

This question is somewhat rhetorical

Given this how can we make a bracha on any given sheeta of Tefillin?
OR
IOW via what mechanics can we defitively settle this post-Tallmudic
dispute decisively enough to overcome "s'feiq brachos lehaqeil"?

KT
RRW
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