Once the separation had entered the public domain, the College lost no time in sending the Bursar across to enquire when we were going to move. He was quite explicit: the College felt itself under no obligation to house the family if Stephen, with whom the College had signed the agreement, was no longer living there. He was in effect giving me notice to quit. I had neither the presence of mind to protest nor the will to fight. The previous day would have been – technically was – our twenty-fifth wedding anniversary. On that Monday morning in July it was made quite clear to me that everything that had occurred in those twenty-five years was of no importance to anyone else. The records had been wiped out. Those years might as well never have happened. Stephen was the only person who mattered. I was of no consequence, nor were the children. I had been given my marching orders and we were effectively being thrown out into the street. It was time to wake up to a new reality.
— Travelling to Infinity (Jane Hawking), Loc. 6954–60
Now I understand the meaning of the time travel in the movie.