Quantum field theory is local (which explains why we cannot send data faster than light), and also fully explains QM. Relativity showed us that our assumptions

Quantum field theory is local (which explains why we cannot send data faster than light), and also fully explains QM. Relativity showed us that our assumptions about space and time being constant were wrong and instead light is a constant. Similarly, QFT shows us that our measurements do not have single outcomes and never did. Instead reality is made up of quantized waves whose amplitudes are complex numbers and can interact constructive or destructively as long as they remain coherent.