If you dont understand the precise meaning of that thats different,,,,and you are posting your own meaining thats not going to make any sense..... Logically speaking, the Quran being the final message of Allah is going to be unchangeable till the Day of Judgment. For this job to be fulfilled, it has to remain the same because if, God forbids, any change occurs, there will be no point behind its being the final message of Allah.
Therefore, Almighty Allah Who knows the hearts and the nature of human beings has taken the responsibility of guarding and protecting the Qur'an from any change, so that it keeps on fulfilling its job and guiding all human beings till the Last Day. This leaves no doubt that the Qur'an we have today is the exact one that was recited fifteen hundred years ago when the Prophet was alive.