The arrow and the circle of time

The arrow and the circle of time names Shevek’s account of time as at once directional and cyclical: the arrow carries change, evolution, and creation, while the circle makes recurrence and endurance intelligible. In his explanation to skeptical physicists, the image joins abstract theory to observable cycles, from planetary orbits to atomic motion. Elsewhere, its contrast between movement and relation resonates with his resistance to treating either people or knowledge as possessions.

The Two Aspects of Time

Shevek presents the theory as an effort to balance two accounts rather than simply discard one. Sequency explains linear time and the evidence of evolution, encompassing creation and mortality, but, he argues, cannot explain why things also endure. Its image is the arrow: time running in a direction, through change and progress. The circle supplies what a purely linear account leaves out.

His example begins with a planet revolving around the sun. An observer can count orbits as years, but within the cycle itself there is no beginning or end; endless repetition, considered on its own, is atemporal. A cycle becomes measurable as time when it is compared with another process. The orbit therefore functions both as a repeated pattern and as a unit by which change can be counted.

Atoms, Matter, and the Cosmos

Shevek extends the account from planetary motion to matter. Stable compounds consist of constituents moving periodically relative to one another, and the tiny time-reversible cycles of atoms give matter enough permanence for evolution to occur. In his formulation, these small “timelessnesses” combine to make time: endurance is not an alternative to change but one of the conditions that lets change take place.

At the largest scale, he describes the universe as a cyclic process of expansion and contraction, without a before or after. Linear time, evolution, and change belong within each great cycle. The arrow and the circle thus operate at different but connected scales: the arrow signifies direction and becoming, while the circle signifies the recurring structure that makes a world of clocks, seasons, and promises possible. Without the arrow there is no progress or creation; without the circle, succession would be meaningless.

The Image in Debate

The explanation unfolds in a tense academic exchange. After being challenged to defend simultaneity against the charge of mystical regressivism, Shevek pauses, takes a pastry he does not want, and eats it, mindful that he has already lost his temper once that day. When one inquisitor’s evident desire to understand draws him in, he explains the model with animated gestures, trying to make the arrows, cycles, and oscillations materially visible.

A second interlocutor objects that two apparently contradictory statements cannot both describe the same thing, and concludes that one aspect must be real and the other illusory. Shevek accepts that many physicists have made this objection, but the image’s force lies in refusing that choice: time requires both directional change and cyclical endurance. The discussion makes the metaphor a compact statement of his larger theoretical effort to hold apparently opposed processes in relation.

Exchange, Change, and Shared Knowledge

The image also resonates with Shevek’s conduct beyond the lecture room. On arriving in Urras, he says he has brought nothing and explains that, because he cannot buy or bring enough to live on, his hosts must give to him if they choose to keep him alive. He calls himself the “Beggarman” and describes the encounter as an attempt to make Urrasti give rather than sell. Later, arriving empty-handed at another exchange, he identifies himself as a good Odonian who brings no gifts because his people use nothing their hosts lack.

That resistance to turning every relation into a transaction becomes explicit when Shevek tells Chifoilisk that he came to bargain with a profit economy for the freedom of exchange between Urras and Anarres. By the end, he asks whether there can be a gift instead of a sale and says he wants to give his theory to Urras, Hain, and other worlds for the common good, so no one can use it to gain power, wealth, or advantage in war. The arrow and the circle are therefore not merely a scientific illustration: alongside his demand for shared knowledge, they express a vision in which movement and persistence, individual effort and common life, cannot be reduced to a single direction of ownership.