[Avodah] If you have an electronic water meter, can you turn on your faucet on Shabbos?

[Micha Berger]

On Wed, Jul 18, 2012 at 08:16:35PM -0400, Zev Sero wrote:
>> Similarly, the more practical case of eating a cake that has lettering
>> on it.
>> Derabbanan 1: Mechilqah shelo al menas likhto
>> Derabbanan 2: Derekh achilah
>> So, PRDNL is permitted.

> Where's the "lo nicha leih"?  In you first case I understand the LNL
> because it's a *bug*, and doesn't *want* it in his box, and he would
> let it out if he could.  But here, what's his objection to erasing the
> writing on the cake?

You are defining lo nicha lei as something that is bad for him.

The MB assumes the Rama defines lo nicha lei as something that is not good
for him. IOW, it includes neutral. I'm not sure anyone disagrees. See
R Meir Levin's Feb 2005 post
<http://www.aishdas.org/avodah/vol14/v14n072.shtml#04>, where he cites
Tosafos (and the Beiur Halakhah).

Tir'u baTov!
-Micha