The video correctly describes the basic idea of string theory, but it overstates it as a proven explanation of reality and skips key context about ordinary matter and experimental status.
Claim-by-claim breakdown
Accurate (94% confidence): Atoms are made of smaller particles such as electrons, protons, and neutrons, and protons and neutrons contain quarks. The NRC explains that atoms contain protons, neutrons, and electrons. The U.S. Department of Energy explains that protons and neutrons are made of quarks.
Accurate (92% confidence): String theory proposes that the fundamental building blocks of nature are tiny strings rather than point-like particles. Reference sources on string theory describe it as a theory in which tiny strings underlie the particles we observe.
Accurate (95% confidence): In string theory, different vibrational modes of a string correspond to different particles. Cited sources explain that different vibrational modes of strings give rise to different particles.
Accurate (86% confidence): Scientists developed string theory as part of the search for a 'theory of everything' that could unify all forces and particles. String theory was developed partly to unify quantum mechanics and gravity and to aim for a unified description of nature, but that goal remains unproven.
Accurate (96% confidence): String theory has not been experimentally proven. Major reference sources note that string theory remains untested or lacks experimental detection of its predicted new particles/effects.
False (90% confidence): Our reality, every particle, force, star, living organism, chemical reaction, and thought are just vibrations of an underlying entity called string theory. String theory is a speculative framework in theoretical physics, not an experimentally confirmed account of every phenomenon or of consciousness.
Accurate (68% confidence): An electron would be a different vibration than a proton in string theory. The general idea is right, but the example is imprecise because protons are made of quarks and gluons in the Standard Model, while string theory maps modes to particle states at a more fundamental level.