This monograph by Anthony D. Osborne explores the real possibility of  ’time-travel’ by relativistic ‘time-slides’ in which observers  may ‘overtake’ and ‘undertake’ one another in time, analogously to the way in which vehicles overtake and undertake on a motorway. Some of the wider physical, philosophical and humanitarian implications of this are also explored.

The monograph is accessible by clicking on the following link:

The Nature of Time, Anthony Osborne