Corrected entry: In the scene near the start where the laboratory explodes the strength of the explosion is sufficient to lay waste the entire area surrounding the lab and to cause articulated trucks to fly through the air, yet Keanu Reeves manages to survive by taking shelter in a shallow cutting. This would not be possible.
Corrected entry: When the laboratory is about to explode, Morgan Freeman and the head of C-Systems are riding to the surface in an elevator. A gun shot is heard, and we see that Morgan Freeman has killed his boss. In one angle where Morgan Freeman is exiting the elevator they show a shot of his boss, dead, in the corner of the elevator. If you look closely enough you can see his eye move, even though he's supposed to be dead.
Corrected entry: With all of the high tech equipment at their disposal at C-Systems, couldn't the scientists simply have played through all available audible sound frequencies untill they found the one to stabilize the reaction?