Re Time:
Physicists have failed to address the issue of the difference between a set of equations and a viable moving system.
Despite the fact that a physicist occasionally pops up and points out that there is a problem, seemingly most physicists are not even dimly aware that there is a difference between a set of equations and a viable moving system.
It is the non-measurable logical connectives that make the difference between a set of equations and a viable moving system.
Not that non-measurability should be a problem, because real-world numbers are not measurable (they are the result of measurement) and the real-world laws of nature are not measurable (they are inferred, as a result of scientific experiment and measurement).
It is not possible to figure out what “time” could be, without taking account of the difference between a set of equations and a viable moving system, i.e. without taking account of the logical connectives that are necessary if you want to have a viable moving system, and without taking account of what aspects of the world these logical connectives might represent.