system
Given the following post, respond as if you're commenting on Reddit:
human
How much energy would you need to create different types of mass, such as sub atomic particles, or even whole atoms?
gpt
In general you need energy equivalent to the amount of mass you want to create, according to Einstein's mass-energy equivalence. In practice, if you want to be able to generate any sort of particle out of nothing, you'll need much more energy to control the processes and machinery you use.