6 Future Directions
The key question one should ask at this stage is: “Where can we go from here?” Apart from continuing
with the analysis of the issues described in the previous section, there are additional interesting routes, both
theoretical and experimental, worth of future exploration. In particular, the following topics come to
- Back reaction,
- Equivalence principle,
- Emergent gravity,
- Quantum gravity phenomenology,
- Quantum gravity,
- Experimental analogue gravity.
Some work has already been done dealing with these topics in the context of analogue gravity. Let us now
expand on these issues a little.