Reply To: Melacha Sh’einah Tzricha L’gufa

Glad everybody enjoys the thread (non-political for a change, although I didn’t like the tone of disrespect in some of the posts).

As far as unpublished tshuvah of Reb Moshe, as far as I can recall it is published, and I will look up over Shabbos.

But before that, I wish someone will develop the sugya from its roots. I started with the Rambam. However, do all rishonim agree that melacha Shetl”g is assur? Do all rishonim agree that kibuy is melacha Shetlg? If not, then maybve kibuy is only drabbanan on Shabbos, and certainly on YT. Is removing gas considered kibuy, or not. We can’t remove oil from a lamp, but I believe I just learned in Rambam that one can take away a log from a fire if it has not ignited yet. I also believe one can carry a flame, even though it will get smaller. I also heard that during havdala when YT is Motzai Shabbos, there is a heter to use the shabbos candles holding them together and then releasing even though the flame will get smaller.

So one who wants to discuss the sugya needs to develop it step by step according to the gemara and rishonim, and only then to apply it to the modern metzius. If somebody is willing to do the research, please do so, or I will try to do some over shabbos.