The Gravity of Optimization

What We Stop Questioning When AI Automates Our Choices

AI does not remove choice. It often hides it.

Every time we build or use an AI system, many choices have already been made for us: what data to use, what to exclude, what objective to optimize, what error to avoid or tolerate, what assumptions to make, what limitations to accept, and what forms of human judgment to preserve.

In the early stages of using a new technology, these choices are easier to see, especially when we experiment and things go wrong. We ask whether the tool is reliable, test its limits, and notice when it fails. We debate whether it should be used at all.

But as the tool becomes more optimized for our use and more convenient to rely on, the questions begin to fade. The interface feels smoother, and the outputs read more fluently, so the tool’s workflow gradually recedes into the background. Eventually, what once felt like a series of our own decisions comes to feel like an infrastructure we simply accept living within.

This is what I think of as the gravity of optimization. By this, I mean the tendency for encoded objectives to become defaults we stop questioning.

It is not simply that AI automates tasks. Automation can save time, reduce burdens, and make certain forms of work more accessible. The deeper issue is what happens when automation is combined with optimization: when systems do not merely perform tasks, but perform them according to objectives that may be inherited, implicit, poorly examined, or too narrowly defined.

Once that happens, we are no longer just using tools. We are being pulled along by the values, which we didn’t choose, embedded in them.

When Convenience Becomes a Moral Force

Gravity is not something we choose. A stone does not decide to fall. But when I hold a stone in my hand and release it, I have made a choice. I did not create gravity, but I allowed gravity to determine what would happen next.

AI creates a similar situation.

We do not choose every downstream consequence of the systems we build or use. We may not intend every distortion or harm. But when we stop examining the assumptions and decisions embedded in these systems, we are choosing to let optimization carry us forward.

That is the danger of convenience. It does not feel like surrender. It feels like progress.

A model works “well enough.” A recommendation seems “reasonable.” A ranking looks “objective.” A summary sounds “fluent.” A metric appears “neutral.” A workflow becomes standard.

At some point, we stop asking the most important questions: What is being optimized? What does that objective prioritize? What kind of judgment is being replaced? What is made visible, and what disappears?

The system has not forced us to stop asking. It has simply made it easier not to.

The Choices Inside AI Systems

AI systems can appear technical, but they are also social and moral artifacts. They carry choices about what counts as knowledge, what is labeled as success, and what is treated as acceptable failure.

Visible or invisible, algorithmic optimization depends on choices made at every layer. Someone had to find the data, define the categories, set the objective function, build the benchmark and unit tests, design the interface, reason tradeoffs among failure modes. If we did not choose these things ourselves, someone else chose them for us.

Training data reflects what has been collected, digitized, labeled, preserved, and valued. It also reflects what has been ignored, erased, underfunded, or never recorded in the first place.

An objective function sets priorities for the system. Accuracy, speed, engagement, efficiency, prediction, profit, retention, safety, and fairness are not interchangeable, and optimizing one can distort another.

A benchmark defines what kind of performance is recognized and what kind of intelligence becomes legible.

Interface design also matters: it shapes what feels easy, what feels normal, and which frictions are quietly removed from the workflow.

These choices may be reasonable. Some may be necessary. The problem is not that choices exist. The problem is when they disappear from view.

Optimization Without Reflection

Optimization is not inherently wrong. In many contexts, it is useful and necessary. We should want systems that work better, reduce waste, improve access, and support better decisions.

But optimization cannot tell us what is worth optimizing. It can make processes faster, predictions more accurate, and rankings more consistent, yet it cannot tell us whether those should be the governing values in a given context, or what kind of society we create when ranking becomes the default form of judgment.

Optimization begins after the goal has already been chosen. If we do not examine that goal carefully, the system will inherit one from somewhere else: the market, the platform, the institution, the benchmark, the available data, or the easiest measurable proxy.

That inheritance is the gravity.

Holding On to the Question

The alternative is to keep the question of choice alive.

When using or developing AI, we need to keep asking:

What is being optimized? What assumptions are being made? What data shaped this system? Who is missing from that data? What limitation is being hidden by fluency? What kind of human judgment is this replacing or reshaping? What values are becoming defaults? What consequences are we choosing by not choosing consciously?

These questions introduce friction. But not all friction is bad. Sometimes friction is the mechanism by which responsibility returns.

In a culture that prizes seamlessness, reflection can feel inefficient. But perhaps the point is not to make every decision faster. Perhaps the point is to make consequential choices more visible.

The gravity of optimization works by making choices disappear.

The task before us is to make these choices visible again.

Because when we stop noticing the choices embedded in our tools, we do not become neutral. We become governed by decisions already made elsewhere.

Gravity is what happens when we let go, and the pull gets stronger as AI systems accumulate more and more optimized tasks.

The future of AI will depend, in part, on whether we keep asking that question.

Acknowledgment: This essay benefited from discussions with multiple LLMs; all arguments and judgments are my own.

Tian Zheng
Tian Zheng
Professor of Statistics, Columbia University