In one sentence
Chronological age is only part of how old life feels. As novelty declines and routines accumulate, subjective time seems to speed up; deliberately pursuing unfamiliar experiences and demanding habits can make the future feel more expansive.
Overview
The essay begins with childhood summers that seemed almost endless, contrasts them with adulthood’s accelerating years, and links the shift to novelty, dopamine, memory, and repetition. It introduces “perceived age”: a rough scaling of age according to how significant each year feels relative to the life already lived. The conclusion turns personal and exhortative, urging readers to resist routine, build durable habits, and use their remaining time experimentally rather than organizing life around a single career path.
Core ideas
Novelty stretches subjective time
First experiences attract attention and generate dense memories, making periods feel longer in retrospect. Repetition produces fewer distinctive memory markers, so similar intervals seem to collapse.
Time perception has biological and psychological components
The essay connects internal timing to dopamine, while also emphasizing memory, attention, emotion, and cognitive demands. It presents perceived time as malleable rather than as a fixed readout of clock time.
Perceived age is a ratio, not a birthday
A year represents a larger fraction of a young person’s remembered life than of an older person’s. The proposed calculation treats each additional year as subjectively smaller, especially after discounting early childhood memory.
Identity is built around memorable firsts
Travel, relationships, work, and other formative experiences become identity anchors. Their importance is not merely that they lasted longer, but that they supplied unusual details the mind retained.
A dynamic life is a practical response
The author recommends trying unfamiliar activities, learning difficult things, changing environments, and developing health habits. The aim is not literally to stop time, but to prevent years from becoming indistinguishable.
The essay’s personal argument
Surya connects the theory to disrupted college years, early adulthood, work, ambition, and a fear that time is accelerating. The desired alternative is a disciplined but open-ended life with multiple projects and communities.
Practical takeaways
- Schedule genuine novelty rather than relying on consumption or superficial change: learn a difficult skill, visit unfamiliar places, meet different communities, or change a familiar routine.
- Create memory landmarks. A year containing distinct projects and experiences is more likely to remain vivid than one spent repeating the same weeks.
- Pair exploration with durable habits such as exercise, cleaner eating, and disciplined work; novelty alone can become scattered or unsustainable.
- Review whether your career and routines are chosen or merely inherited. The essay treats occupational identity as less permanent and important than it is often made to seem.
- Use the idea as a prompt for action, not as a precise measurement of subjective age.
Caveats and counterpoints
- The article compresses several distinct theories of time perception into a mostly dopamine-centered explanation. Dopamine is relevant, but attention, emotion, arousal, memory, context, and prospective versus retrospective timing also matter.
- The cited mental-counting comparison is presented as evidence for age-related change, but estimating 120 seconds in a laboratory task is not the same as experiencing a year as fast or slow.
- Novelty can make moments feel longer while they are happening, yet dense novelty can also make a period seem to have passed quickly in retrospect. The direction depends on the type of judgment being made.
- The perceived-age calculation is an intuitive model rather than an established clinical or psychological metric. Its treatment of childhood amnesia and year-by-year significance is necessarily approximate.
- The closing advice is intentionally provocative. Multiple careers, radical change, and rejecting conventional stability may suit some people, but financial obligations, health, relationships, and community commitments can make continuity valuable.
Questions worth revisiting
- Which parts of my life currently feel interchangeable, and what specific recurring experience could I disrupt?
- Do I want time to feel slower while living it, more memorable afterward, or both?
- What kind of novelty would deepen my identity rather than merely provide stimulation?
- Which habits would continue paying off if I established them this year?
- Am I avoiding change because the current path is right, or because it is familiar?
Return to this when…
Return to this essay when a year feels as though it disappeared, when routine has become indistinguishable from progress, or when deciding whether to protect comfort or deliberately introduce a meaningful challenge.