A new memory

Had a dream was traveling to some zombie infested human world. I asked one the lead scientists if he had waveform tech. Then i gave him a Harmonic weapon purely designed to destabilize the zombie vibrations in effects releasing them from those cursed bodies. I then told him he take the credit for making it and saving his world. I traveled in time for a bit then i ended up in their future things were slightly better no zombies. I know i didn't get the credit but i saved people. people were trapped with those walking corpse and those who were running from them.