system
Given the following post, respond as if you're commenting on Reddit:
human
What is the most efficient mechanism for converting matter to energy?

At the moment the most efficient I know of would be nuclear fusion. Is there anything that’s more efficient?
gpt
The most efficient would be matter antimatter anihilation. Using this you will be converting 100% of the mass into energy. The problem is however, that you need antimatter in the first place which isn't just lying around.