We are told by the Gemoro Sanhedrin 72A (brought by Rashi on Devorim 21:18) that the Ben Sorer is killed because the Torah foresees that he will eventually kill somebody. However the Rambam rules (Mamrim 7:8) that the parents can absolve the child's death penalty if they desire.
What gives them the right to do sacrifice the life of the future murder victim!?
I've seen an answer in the name of the Sochatchover Gaon (haven't found it inside yet) that if there are caring parents then the Torah knows that the wayward child will correct his ways. I'm looking for a different answer. Thanks