Reply To: Chidushim on Daf Yomi

The whole Beis Hamidrash can be considered four amos of halacha. We find that according to the Zohar Hakadash one is not suppose walk in his house four amos without washing his hands in the morning. The Rashba says that the whole room is like four amos.
The Iyun Yaakov on the Ein Yaakov says that Aron was 2 1/2 length by 1 1/2 width and 1 1/2 height.
Either two add up to 4 indicating 2 1/2 in knowledge (bekios) and 1 1/2 in pilpul to arrive to a halacha
I want to say that in every one of the four chalokim in Shulchan Aruch we find something pertaining to four amos. This would tell us to learn the whole Shulchan Aruch.