<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:10pt"><div><span>our understanding of fire (and its' associated electricity cousin) in the minds of the poskim, are not the</span></div><div><span>same as they were at the turn of the century when they decided that </span></div><div>electricity was assur on shabbas. now our understanding has changed, and for instance we know that</div><div>not all fires (eg underwater flares) are the same; </div><div>is there a nafka mina in that in the times of the gemarra if a tanna or amora passed a halacha (and the </div><div>reason(s) changed, we do not change the halacha (eg snakes in am water), </div><div><br></div><div>mecz</div></div></body></html>