Simplify the following text for a Grade 10 native English-speaking person.
Original: In four dimensions , a spinor has four degrees of freedom and thus the minimal number of supersymmetry generators is four in four dimensions and having eight copies of supersymmetry means that there are 32 supersymmetry generators .
Simplified: Supersymmetry may create more than one copy , since there are many dimensions ( some string theories predict up to 11 ) . Supersymmetry is believed to exist by many scientists because it solves many inconsistencies in the Standard Model of physics .