How do you create something out of nothing?

There are several possible answers to your question:

• The Big Bang, according to cosmologists, created everything out of nothing.

• Space itself is believed to spontaneously generate virtual particles and antiparticles which immediately cancel each other out. But in the vicinity of a black hole, a pair of such particles forming at just the right (wrong?) distance might have half the set captured by the black hole's intense gravity, allowing its partner to stream away as a fully-formed something.

• The cipher (the number 0, zero) is literally something that stands for nothing.

• E=mc2 shows that matter can in a sense be 'created' from energy. It's not really something out of nothing, unless you carefully redefine 'something' to mean 'an object'.