Ask The Rabbi  
21 September 1996 
Issue #120 (Parshas Ha'azinu)
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This Issue Contains:  
1.  Life In The Fast Vein
2.  Succah-Net
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Ivy Epstein wrote:

>If someone is sick and knows that he is going to have to eat on Yom 
>Kipper, why not do so through intravenous?  It's my understanding that 
>since intravenous is not the normal way of eating, it's not technically a 
>violation of the requirement to fast.  If you tell me that intravenous is 
>too big a bother or expense, isn't it true that a person must go to all 
>lengths and expense not to transgress a negative commandment?  So why 
>don't sick people check in to a hospital before Yom Kippur and `eat' 
>intravenously? 

* * * * * * * * * * * * * 

Dear Ivy Epstein,
	The obligation to fast applies only on Yom Kippur itself.  Before Yom 
Kippur, however, there's no obligation, per se, to prepare for the fast.  
Hence, there's no obligation to hook up to intravenous in order to fast.  
Once Yom Kippur arrives, it's forbidden to hook up to intravenous, since 
blood will spill.
	And since there's no obligation to `eat' intravenously, it might 
actually be forbidden to do so, for a few reasons.  For one, inserting a 
needle is a transgression of the prohibition against unnecessarily wounding 
oneself.  And who knows, intravenous may involve certain health risks, all 
of which may not be known at present.  In short, it should not be done.
	Once, a man on intravenous had an overwhelming desire for a glass of 
tea, and he finally convinced the doctor to administer it to him 
intravenously.  When the tea began flowing, however, the man winced.
	"What's the matter," asked the doctor.  "Too hot?"
	 "No, too sweet."
Sources
o  Iggrot Moshe Orach Chaim 3:90

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Elaine Rubin <weaver51@teleport.com> wrote:

>Is it acceptable to use window screen material for the walls of the 
>succah, or must it be material through which one cannot see?

* * * * * * * * * * *

Dear Elaine Rubin,
	First, thanks for letting us `screen' your question.  Did you hear 
about the man who ran through a screen door?  He strained himself.
	The halachic definition of a `wall' is different than Webster's 
definition.  Halachically, a wall can have a gap of up to three tefachim 
(handbreadths) and still be valid.  This is based on a concept called 
`lavud.'  Lavud means that we consider any gap of less than three tefachim 
as though it's connected.
	But the laws of lavud are complex.  Therefore, the custom is to use 
full walls, and not to rely on lavud.
	However, a screen is a valid wall, even without appealing to the 
concept of lavud.  Since it has wires running both horizontally and 
vertically, it is a full-fledged wall in it's own right.  So screens, 
although `holey,' are valid succah walls.
	Walls that sway with the breeze are invalid.  Therefore, you have to 
fasten the screens tight so they don't sway.  (If they sway in a very gusty 
wind, that's OK.)
	Your succah may not be the most private place (unless you hang 
curtains in front of the screens) but it's valid.
	Story:  A thief once took advantage of a crack in a succah wall, to 
reach in and steal a pair of silver candle sticks.  When the incident came 
to the attention of the Rabbi Chaim Ozer Grodzinsky, zatzal, he remarked 
that thief must have been an am ha'aretz -- someone ignorant of Jewish law.  
"A Torah Scholar could never have done such a thing," jested the rabbi.  
			"Knowing the din of lavud (that the halacha considers a 
break smaller than three handbreadths as though it is sealed), a Torah 
Scholar would never have been able get his hand through!

Sources:
o  Succah 7a
o  Succah 16a and Tosafot D.H. "B'pachot"
o  Shulchan Aruch Orach Chaim 630:5, Rema ibid., Mishna Berurah 28
o  Eruvin 16b
o  Shulchan Aruch Orach Chaim 630:10
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