Quantum Mechanics is a field of science discovered by humans in the 20th century, and together with the contemporary theory of relativity, it supports the pillars of scientific doctrines for the 20th century.
In the quantum realm, there is a very important core, that is, the Uncertainty Principle, which is also an important law existing at the quantum microscopic level, namely, whether there is an observer, which can lead to drastically different results at the microscopic level.
One hundred years after the birth of quantum mechanics, humans still cannot figure out why there is uncertainty at the microscopic level and why the presence of an observer can lead to drastically different experimental results at this level. These questions remain unanswered by humans, despite being described with various mathematical formulas, wave functions, etc., but the essential why is still unknown.
