Yoma 43: How Is This Day Different from All Other Days?

The need to read the parah adumah verses very carefully, in terms of establishing what the halakhah is, and all of the details pertaining to the parah adumah, in its classic status as a "chok." Noting that the Amoraim remain puzzled... Plus, a new and very long mishnah... Comparing the kohen gadol's actions on Yom Kippur to "every day." Including some differences to ease the strain on the kohen gadol on Yom Kippur.