It is possible to serve God with everything. אפשר לעבוד השם יתברך בכל דבר This is an idea brought in the LeM of Rav Nahman in Vol II 44 (and circa 86). Rav Nahman did not hold from looking for extra restrictions.
There was in fact an incident in which Rav Natan [his disciple] was offered to be a rav in some city. He asked Rav Nahman about whether to accept the offer or not.
Rav Nahman asked, "Why not?"
Rav Natan said, "I am afraid of Hora הוראה." [Giving a legal decision.]
Rav Nahman said "As long as there is a posek [authority] to depend on, you can depend on him."
I am not quoting this story exactly but this is the best that I can recall.]
[At that time the word "Posek" referred to Rishonim, However Rav Nahman used the same word to refer to the Shulchan Aruch of Yoseph Karo with its commentaries Shach, Taz, etc.
Even so, carrying in a public domain seems problematic. I know that Some Rishonim hold you need 600,000 to be a public domain, still this seems hard to swallow. I should mention that the Eruv that people put up has nothing to do with a public domain. It helps only for a Carmalit.{ Carmalit is like a מקום פטור a space that is not a public domain nor a private domain.] But real public domain a string can not make into a private domain. The reason I say this is that in tractate Shabat you have lots of discussion about what constitutes carrying in a public domain and no where is it mentioned that the cities in Babylonia were small. The largest citiesz in the ancient world were like Rome with more than a million people. But Sura or Pumbdita or other cities where there were mostly Jews were not more than Athens at its peak of power and prosperity which was about 20,000 But the Gemara goes into the issues of a public domain without mentioning anywhere that that could not have applied to their very own cities. which were less than 600,000
[The issue here is much more important than meets the eye, for it goes to the very root of what is inane and insane about the religious world in their constant search for more and more things to forbid and then claim that it is all from the Torah.]
[This is the core of my critique about the religious world,--they make up restrictions that have no source in the gemara or poskim, and ignore real and actual prohibitions of the Torah or the words of the Scribes. and yet claim to be representing true Torah and want us shimazals to pay for their sitting around all day chatting and claim to be learning Torah.]
