# The time measurement problem in quantum cosmology

## TL;DR

This paper critically examines the canonical approach to quantum cosmology, highlighting conceptual issues with using relational clocks and conditional probabilities to address the problem of time.

## Contribution

It provides a critical analysis revealing fundamental conceptual problems in the relational approach to the quantum gravity time measurement problem.

## Key findings

- Relational clock variables face serious conceptual issues.
- Conditional probability interpretation has fundamental flaws.
- The approach may not resolve the problem of time in quantum cosmology.

## Abstract

In the canonical approach to quantization of gravity, one often uses relational clock variables and an interpretation in terms of conditional probabilities to overcome the problem of time. In this essay we show that these suffer from serious conceptual issues.