  Three of the big puzzles of theoretical physics are the following: (i) There
is apparently no time evolution in the dynamics of quantum general relativity,
because the allowed quantum states must obey the Hamiltonian constraint. (ii)
During a quantum measurement, the state of the quantum system randomly
collapses from being in a linear superposition of the eigenstates of the
measured observable, to just one of the eigenstates, in apparent violation of
the predictions of the deterministic, linear Schr\"{o}dinger equation. (iii)
The observed value of the cosmological constant is exceedingly small, compared
to its natural value, creating a serious fine-tuning problem. In this essay we
propose a novel idea to show how the three problems help solve each other.
