  We examine in detail the cosmology based on quantal (Bohmian) trajectories as
suggested in a recent study arXiv:1404.3093[gr-qc]. We disagree with the
conclusions regarding predicting the value of the cosmological constant
$\Lambda$ and evading the big bang singularity. Furthermore, we show that the
approach of using a quantum corrected Raychaudhuri equation (QRE), as suggested
in arXiv:1404.3093[gr-qc], is unsatisfactory, because, essentially, it uses the
Raychaudhuri equation, which is a kinematical equation, in order to predict
dynamics. In addition, even within this inconsistent framework, the authors
have adopted unjustified assumptions and carried out incorrect steps leading to
doubtful conclusions.
