shazard
So answer is - God KNEW what COULD happen as it was HIS creation, and even there he did this creation and universe in such way that even THEN his plan can be fullfilled only now in "hard way". God would not started creation if he would not be able succesfully to lead it to the end of his plan or to the next stage of his plan. It is human nature to think only plan A... but God will allways have plan B and C and even the plans are part of the same plan A.
Maybe. But we do not know anything. Possibly God`s plan included at first an appropriate response only for the case Adam`s and Eve`s "obedience-test" (without lucifers appearance as serpent) would fail, and maybe, for this case, a sort of "plan light", not leading to such "bizarre" and "strange" situations, as we read in the hebrew scriptures, was in preparation... Maybe, God got really SURPRISED by Lucifers fall, it was the most unlikely case in the eyes of God (we call it Super-GAU /worst case scenario/ in nuclear terminology), and in such a situation, the outcome was really extremely difficult - even for God himself - because he CANNOT change laws of mathematics and logics.... Then, plan "hard way" came...
And, when we further go to analyze such a situation explicitely, we could maybe come to a sort of understanding for many (from view of a scientist often bizarre and weird) things happened in the bible.
Besides: Presently, we do not know all laws of self-organizing biological structures. Possibly, in future, scientists will find new laws that verify and confirm Gods actions. Makes it comprehensible even for "realistical scientific thinking". Nobody knows.