Why We Can't (and Shouldn't) Edit the Text of Davening (Part 3)

Last Thursday we went over four reasons why we can't (and shouldn't) edit the text of davening. In this evening's tefilah shiur (11/23/21) we went over six additional reasons, bringing us to a total of ten. Only at the VERY end of the shiur did we get to the question, "What are the parameters for when we CAN change the text of tefilah?" - but that'll have to wait until next time!