Sense Sonnet - Tickler

Party Time Unknown

Stephen Hawking, famed scientist,
Thought and wrote a lot about time.
Asked if time travel did exist,
Hawking did choose a test sublime -
Threw a party open to all,
Did serve hors d'oeuvres and iced champagne,
But only sent the invite call
After the time to entertain.
So only those who would attend
Would be time travelers who'd know
That if in time, time back could send,
Then to the party they could go.

Only in time could Hawking blame.
To his party nobody came.