Final answer:
Filby and Dudley panic when they realize the time machine is gone, introducing a common science fiction theme of time travel which is theoretically possible but not yet realized.
Step-by-step explanation:
In "The Time Machine" by H.G. Wells, Filby and Dudley panic when they are getting ready to leave for the first time because d. The time machine is gone. The disappearance of the machine instills fear and confusion as they face the mysterious vanishing of the device that enabled their time travels. Time machines, often featured in science fiction narratives, theoretically could manipulate gravity to traverse time as per the principles of general relativity. Although time travel captures the imagination, it remains a concept not yet accomplished in reality.