[Avodah] our understanding(s) of fire......change in halacha??

[Yosef Skolnick]

There are 2 separate questions here:

1) How do we view halacha with regards to changes in understandings of the
metzius or principles involved, once "rules" have been established?  Is
there any difference how long ago the rules were established? Do the
different types of sevaros have different "rules" as to when they may
change?
2) How that would apply to electricity?  A good article that gives a truly
excellent summary of the issues involved can be found here:
http://www.daat.ac.il/daat/english/journal/broyde_1.htm

Yosef Skolnick
516-690-SKOL
https://sites.google.com/site/yskolnick/




On Thu, Sep 15, 2011 at 6:04 PM, Harvey Benton <harvw613 at yahoo.com> wrote:

> our understanding of fire (and its' associated electricity cousin) in the
> minds of the poskim, are not the
> same as they were at the turn of the century when they decided that
> electricity was assur on shabbas. now our understanding has changed, and
> for instance we know that
> not all fires (eg underwater flares) are the same;
> is there a nafka mina in that in the times of the gemarra if a tanna or
> amora passed a halacha (and the
> reason(s) changed, we do not change the halacha (eg snakes in am water),
>
> mecz
>
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