  In this paper, we describe physical effects occurring in the regularized
Robertson-Walker spacetime which can reveal the presence of the defect. Our
analysis is based on two main physical quantities: the compressive forces
acting on (human) observers and the energy possessed by massive particles and
photons during their dynamical evolution. In Sec. 3, we claim that with a
characteristic length scale of the order of the Planck length compressive
forces become so intense near the defect that no (human) observer is able to
cross it. In Sec. 4, we show that the energy exhibits an unusual character over
a small time interval around the bounce contrasting with the behaviour in the
standard cosmology picture. We conclude the paper with some considerations and
open problems related to our results.
