TL;DR
This paper explores the fundamental principles and profound consequences of quantum field theory, highlighting its successes, limitations, and the role of infinite degrees of freedom in implementing locality.
Contribution
It provides an overview of quantum field theory's core principles, its most significant achievements, and discusses potential limitations based on historical context.
Findings
Quantum field theory's success in describing fundamental particles.
The role of infinite degrees of freedom in locality.
Potential limitations of quantum field theory.
Abstract
I discuss the general principles underlying quantum field theory, and attempt to identify its most profound consequences. The deepest of these consequences result from the infinite number of degrees of freedom invoked to implement locality. I mention a few of its most striking successes, both achieved and prospective. Possible limitations of quantum field theory are viewed in the light of its history.
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