(And just to show you what lies on the edges of the frontier now...)
Once upon a time, in a place where the sky was always blue and 100 years meant nothing, a small group of inspired individuals pondered the critical question of quantum physics - Is there an arena in which quantum events occur, and does it exist before we observe it or emerge as we observe it?
Ridding themselves of the constraints of common assumptions about quantum topology, these individuals imagined that past events could be altered "as a result of appropriate measurement". And the UNDO (or Topology Leaps) Project was conceived.
Text from UNDO project website...
<<'Undo' follows from the claims of quantum topology. `Undo' involves the changing of spacetime. Say for instance that an explosion has occurred; in principle it is possible that by observation itself the arena that is spacetime may be so altered that the explosion did not occur. In this sense it has been undone. This is a quasi undoing or altering, which occurs as a result of appropriate measurement. This would not be possible without quantum effects, and the goal of this project is to find appropriate measurements of spacetime, which involve those effects. Quantum measurements are those which unavoidably effect that which is being measured. The point about this process is that it is the act of measurement itself, which creates the stadium, and further measurements may create altered or different stadia. This is not the same as travelling back in time; what takes place is an alteration so that a previous setting is undone, in the sense that it did not exist. Einstein claimed that the past and the future are in a given, predefined or frozen spacetime. The Undo project melts it.>>'
Can it be done?' is the obvious question. The more interesting question is 'Who or what inspired these individuals to think outside the quantum box?' ;)
