yes The Quran is 100 % perfect. The Quran is the signs of books, not science, not history or else..Now it gives us examples from past... in christiniaty because they think they know the number of Prophets they even give the age of the world.. guess what, the science does not agree with christinity...so difiirent..but Islam goes with science also..
Now let me ask you.. almost same question.. you say bible.. do you know the exact number of bible??? well i know diffirent sections use diffirent books of bible..like 66 books of bible or 72 books of bible ( and they do not accpet the other books of bible simply reject them) but noone
knows how many of them...if the number of the book is not certain then how you can claim that bible has not been chnaged..
how Allah cant preserve his book?
Then we shouldve stayed with the teaching of Adam why Allah sent another prophets..we wouldnt need Jesus pbuh or Adam pbuh or Abraham pbuh or Noah pbuh .. Adam pbuh shoulve been enough then according to you.. you believe Allah sent prophets time to time why Allah sent them..why? Allah is so perfect but we are not.. this life is a test life..so Allah tests us..Everything is from Allah.. yes Allah can stop people changing the book.. or Allah can stop people killing innocent or Allah can stop people from stealing and yes Allah can stop poeple from lying too then why Allah does not stop those people.. why ? because we are getting tested by Allah. if we do change the word of God we are in sin, if we kill innocent we are in sin if we steal we are in sin, if we lie we are in sin.. Allah allows our actions to see what we will do..so yes people chnage the word of Gods and yes Allah sent others prophets to remind them again and again.. as this is a test world as we are getting tested by Allah and we are responsible with our all actions..
we are really close to end of the world, so the Quran will stay the same because people who come after Muhammed saw. will have at least a book to follow up therefore they will be tested by Allah..they will have quidance also till the end of the world which is close.
Well well.. because of a man in desert?.. well all prophets came almost same area.. if you look down people first, you dont follow your bible's teaching second you look down other prophets with saying that too because almost all of them came from same area..
Again onlyAllah knows who will end up with hell or heaven..
You read the Quran.. good.. then you probably read this verse too..
Surah 74. The Cloaked One, The Man Wearing A Cloak
21. Then he looked round;
22. Then he frowned and he scowled;
23. Then he turned back and was haughty;
24. Then said he: "This is nothing but magic, derived from of old;
25. "This is nothing but the word of a mortal!"
26. Soon will I cast him into Hell-Fire!