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Nature is beautiful.
Nature is also cruel.
And what about the laws of nature?
Most physicists today think
that the fundamental laws of nature
are beautiful and simple.
But the natural laws that they have discovered so far
are not as beautiful and as simple as they could be.
And so, when they develop new theories
they want those to be simpler and more beautiful
than the theories that they know already.
In the past 40 years,
criteria for beauty and simplicity have become mathematical requirements.
And they have worked badly.
They led physicists to predict new symmetries which were not found.
They predicted unified forces which were not found.
They predicted new particles which were not found.
So what do physicists mean when they say a theory is beautiful?
And if criteria from beauty work so badly why do they continue to use them anyway?
Read my book to find out.