What is reality - Quantum Mechanics- What double slit experiment mean to our world

 Quantum mechanics is an exceptionally abnormal hypothesis about the quantum world and its been legitimized by tests commonly. Be that as it may, what this quantum hypothesis precisely say ? What kind of examination demonstrated it ? How this examination was done and what it intend to our reality. By seeing twofold opening trial in detail you can envision independent from anyone else why Quantum Theory is correct.