The amazing spider man is all about conspiracy. In fact, the spider man is a big lier. The following is the explanation.

After he gained very remarkable capabilities, he needed to show himself as a hero. But a hero without a great enemy can never be great. In order to do so, he modified the equation a litlte bit, and then showed it to the doctor, which made the whole tragedy.

Finally, he proved himself a amazing hero in front of the whole city.