@@ -103,6+103,6 @@ Given the primitive arithmetic functions above, how would you implement the less
less-than-or-equal two one ~~> false
less-than-or-equal two two ~~> true
less-than-or-equal two one ~~> false
less-than-or-equal two two ~~> true
-You'll need to make use of the predecessor function, but it's not important to understand how the implementation we gave above works. You can treat it as a black box.
+You'll need to make use of the predecessor function, but it's not essential to understand how the implementation we gave above works. You can treat it as a black box.