Dear Neville,
Wow! You are really out of place here. What is wrong with you that you looked something up?
Some posters will take this to mean ehat your argument must have been logically unsound. Why else would someone resort to the facts?
If I recall Conservative Judaism built such Eruvin back when the lay people kept Shabbos. How is that for normative precedent?
Though you understand that the OP did not come here for psak. The important thing is to remember that we shouldn’t bother him/her anymore, because… because just because.