A scientist that develops a biological weapon that could kill thousands does deserve to be forgiven under certain circumstances. The weapon could prevent more deaths than it causes or just be used to scare enemies to prevent war. For example, the Cold War was prevented by the large amount of nuclear weapons that both sides had. Both sides were afraid of the destruction the weapons would cause, so they never used them. Those weapons prevented a real war; therefore the scientist that developed them saved many lives and should be forgiven.
