if you read the language in the haftora – it says – vihinei hanaar meis…. generally speaking meis means dead… you can always argue how do you know the navi wrote with nevuah, but if you believe that the navi was written binevuah, you also believe the naar was dead… hashem did not perform this miracle for the sake of proving that he exists or his strength – he did it for the sake of elisha….
why go back 200 years ago and question the existence of atoms – what makes you think that when i see blue and when you see blue we’re seeing the same color? anything can be questioned but in your case the question defies cold logic…