 Other aspects and interpretations of quantum mechanics have also been explored. For instance, Sergio Martínez explored the physical content of the Luders Rule (1990, 1991), Pessoa (2005) proposed a modal logical treatment of quantum mechanics, and Pablo Acuña (2016b) pointed out the difficulties in defining the notion of inertial trajectory in Bohmian mechanics which is considered a different theory and not a different interpretation of quantum mechanics (Acuña forthcoming). In turn, Rodolfo Gambini, Luis Pedro García-Pintos, and Jorge Pullin (2010, 2011) devised an interpretation that offers a solution to the quantum measurement problem based on the loss of coherence due to the use of realistic clocks.