There comes a point in a drought when you can't grow those things.
As you say famine looms.
I retreat into the new physics alternative that may be more fundamental than the notion of space time. Many new scientists say that space time is doomed. Spacetime may only be an interface for our understanding of the universe that resembles the interplay of hardware and google software as we stare at our keyboard.
The alternative to a more fundamental reality will have to satisfy all the relationships that space time gives us but with fewer terms and fields and loops.
The way this is being done is the way I have said is geometry. It may be non Euclidian with more dimensions but it is geometry of a combination of shapes and has a history in its conception.
Time as geometry