Travelling In Time Viewed Through Systemic Functional Linguistics

Penrose (2004: 639):

Assuming CPT, we can regard C — the interchange of particles with their antiparticles — as equivalent to PT, so we can regard the antiparticle of some particle as being the ‘space–time reflection’ (PT) of that particle. Ignoring the space-reflection aspect of this, we obtain the interpretation of an antiparticle as being the particle travelling backwards in time. This, indeed, is the way that Richard Feynman liked to interpret anti-particles. It provides a very convenient and consistent way of treating antiparticles within the context of Feynman graphs.

Blogger Comments:

From the perspective of Systemic Functional Linguistic Theory, there is no travelling in time. Time is dimension of the unfolding of processes, such as travelling. A process, and so a particle mediating the process, extends from one location in time to another. Travelling from 1pm to 2pm is extending from 1pm to 2pm, so duration, not motion.