Daf Yomi - Beitzah 5 - More on clapping on Shabbos

Reb Dave wrote:
These Poskim write that if the reason is not longer valid, the decree is no longer valid. In fact, that is one of the reasons we are allowed to dance and clap our hands on shabbos, even though it was originally outlawed for fear one might come to fashion an instrument - it is becasue we are not skilled enough. I beleive the Rama states this, but he is challenged by the Magen Avraham.Question: The reason we are prohibited from swimming on Shabbos is b/c we are concerned one may come to make a flotation device. ( Contrary to the popular idea that it has to do with squezzing hair). But how many peopel today can do this? Should we then be permitted to swim on Shabbos

Rabbi Doniel Neustadt responds:

Firstly making a floating device is a lot less complicated than making a musical instrument. Any geshikete fellow can make a makeshift floating deviceSecondly, the Rama's shita is very difficult to understand even by music, and we dare not stretch it any moreThirdly, and most important, the real reason why nowadays we do not swim is because of the old minghag Yisrael not to dip one's entire body on Shabbos even in cold water because of the concern that it may lead to sechitah or carrying; see Mishnah Berurah 326:21.

Rabbi Ephraim Nissenbaum adds:

I only saw the piece of the posting that was e-mailed to me, but the comparison to clapping on Shabbos is a little different. Although the Rema says that we don't know how to fix instruments today, the Biur Halacha says from Elya Rabba that the Rema is not permitting every type of clapping or dancing. He's not clear what he does permit )I didn't see the Elya Rabba) but it sounds like he's saying that Chazal only prohibited certain types of clapping and dancing, and we're not going to prohibit any more since we don't know how to fix the instruments anyway. The Aruch Hashulchan says this clearly, that our clapping and dancing is a different type than they used to do....