What is the primary reason the Time Traveller gives for his interest in the geometry of four dimensions?

• To prove that time is a physical dimension like space.
• To understand the nature of mathematical lines.
• To develop a theory for time travel.
• To explain the concept of a mathematical model.

The Time Traveller's initial expectation of the future was that people would be significantly more advanced in all aspects of life compared to his own time.

When the Time Traveller first returns from his initial journey, what is the state of his clothing and appearance?

• Immaculate and well-dressed.
• Dusty, dirty, and disheveled, with a cut on his chin.
• Wearing strange futuristic clothing.
• Completely unharmed and clean.

The Time Traveller's friends, such as the Psychologist and the Medical Man, immediately believed his account of time travel after seeing the model disappear.