Is this about to be going to have happened?

From the “Future Echoes” episode of Red Dwarf: 

RIMMER: Lister, it *has* happened. You can’t change it, any more than
  you can change what you had for breakfast yesterday.
LISTER: Hey, it hasn’t happened, has it? It has “will have going to have
  happened” happened, but it hasn’t actually “happened” happened yet,
  actually.
RIMMER: Poppycock! It will be happened; it shall be going to be
  happening; it will be was an event that could will have been taken
  place in the future. Simple as that. Your bucket’s been kicked, baby.

Now then: Science hopes to change events that have already occurred.