[Avodah] ksav she'i efshar l'hizdayyef

[Zev Sero]

David Riceman wrote:
> We went off to visit a sofer the other day to chat about getting 
> tefillin for my son's forthcoming bar mitzva.  While talking about the 
> chemical properties of parchment he mentioned how easy it is to erase 
> letters (via razor blade), and I added that that's why one shouldn't 
> write a kesuva on parchment (see HM 42:1).  The sofer then told me that 
> he had arranged to find parchment for a prominent person's son's 
> kesuva.  Neither of us knew an obvious reason to permit it, but we both 
> agreed that one might exist.  What could it be?

What did Chazal write their shtoros on?  Papyrus?

-- 
Zev Sero                      The trouble with socialism is that you
zev at sero.name                 eventually run out of other people’s money
                                                     - Margaret Thatcher