Yoma 77b - Evil Spirits in Modern Times – גילוי ורוח רעה בזמן הזה

There are things that the Rabbis prohibited for particular reasons but that apply even in modern times where those reasons no longer apply. However there are other such prohibitions which no longer apply because the reasons for the prohibition are no longer relevant. How do we determine the difference between these two realities? This episode explains the process. Sources