The concept of quantum mechanics is complex and beyond the interest or grasp of the average person. But ultimately it has an impact on our reality and its origin. This is my own attempt to wander down tht path of this intriguing topic.
Resources:
double-slit experiment
https://simple.wikipedia.org/wiki/Young%27s_double-slit_experiment
delayed choice experiment
http://www.bottomlayer.com/bottom/basic_delayed_choice.htm
quantum eraser https://algassert.com/quantum/2016/01/07/Delayed-Choice-Quantum-Erasure.html
superconductivity