The Universe is not symmetric
Briefly

The article discusses the inherent asymmetries present in nature, contrasting our left-right mirrored reflections with the biological and physical laws that govern the universe. It explains how, at a microscopic level, particles like neutrinos and their counterparts reveal fundamental differences between decays observed in our universe versus their mirror images. The text highlights the implications of these asymmetries, referencing Emmy Noether's theorem to illustrate the deep connection between symmetries in nature and conservation laws, ultimately asserting that the universe defies complete symmetry.
If you allow an unstable particle to decay, you'll discover many fundamental differences between the allowable decays in the Universe and the decays you'd observe in the mirror.
Despite the mathematical allure of additional symmetries... nature itself is not symmetric at all at a fundamental level.
Read at Big Think
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