Answer:
because he already knows what will happen in future
Step-by-step explanation:
In the book titled "What Men Live By" written by a Russian author in the year 1885. Michael cut the nobleman's leather into two "because he already knows what will happen in the future."
This is because as an Angel, though, without wings and now a mortal, he can still see the immediate future. He was made a mortal following his disobedience to God.
For him to become Angel again, he must answer some questions. Among which is the question of "What is not given to man?" Which deals with the foreseen death of the nobleman.
Therefore, with the knowledge about the eventual death of the nobleman, rather than making the thick leather boot, Michale made a pair of soft leather slippers.