wolfish (i addressed you),i don’t either have the sefer handy but someone of authority told this, and YOU don’t have the right to challenge authority.
bein hasidorim- when people are playing with issurim d’airaisa, then i would call them mechalel shabbos because even if it was mutar to rely on this eruv, do you think it was made one of the 39 melachos (CARRYING) for no reason? it was done with a cheshbon, and now you are going and making it (supposedly) mutar to carry?? Shabbos was made as a day of rest? hetairim can be found for EVERY ONE of the 39 melachos, but l’maisa it is a day of rest??? WHY DO WE LOOK FOR LEEWAYS? (I’m not sure if my point was brought out but i have to go so, this is it for now)