is there really such a thing as a time machine.
The time machine in back to the future 4 runs on rasberry slurpies and hair restoring shampoo.
The flux capacitor is a dimesional convertor that converts 3D+ 2 of time to 10 D plus 2 of time.
Large spacial not curled up.
it converts Einsteins equation to 12 D two time dimensions don't mean one of past and one of future but two pasts and two fufures............
Graham Partis friends have done the math on a 3D model and 2 Dimensions of time works out perfectly.
The math is based on Newtons clock software that you can find on Kogregate.............