Political Science Is Not a Science Because Its Biggest Truths Cannot Be Said

There is a familiar argument that political science is not a real science: the data are thin, experiments are impossible, and the theories do not predict. I have made a version of it myself when writing about the limits of the social sciences. It is a fair argument, but it is not the deep one. A field can have thin data and still be honest. Astronomy had thin data for two thousand years.

The deep problem is different. Political science cannot be a science because the most important truths in its domain are ones the field is not permitted to state.

The Unsayable Findings

Consider what a genuine science of politics would have established by now, given what is in plain view.

Power corrupts. Not as a proverb but as a regularity: put a person in a position of concentrated, weakly accountable power and their behaviour changes in predictable directions. This is as well attested as anything in the social world and there is no chapter on it in the textbook.

Hierarchies behave pathologically. Large organisations lie, protect themselves at the expense of their members, and pursue goals nobody inside them holds. I have written about what hierarchies select for and about organisational corruption; the phenomena are not subtle.

Representative democracy does not represent. The correlation between what publics want and what legislatures do is weak, and on the questions publics care most about it is often absent.

Elections are a show with little substance. They extract almost no information from the public, they turn on noise, and the parties they choose between agree on nearly everything that matters.

Education systems, in nearly every country, fail at the one thing that would justify them, which is teaching people how to know things.

The distribution of income is largely arbitrary, tracking position and luck far more than contribution.

Each of these is either true or false. Each could be investigated, measured, and refined. A field that studied politics scientifically would have a settled position on each, the way biology has a settled position on evolution. Political science has a settled position on none of them, and the reason is not that the evidence is unclear.

Why They Cannot Be Said

The reason is that every one of those statements indicts the institutions that fund, house, and confer status on the people who would have to say them.

A department of political science sits inside a university that depends on the state. Its graduates go to work in ministries, parties, think tanks, and the press. Its journals are refereed by people whose careers were built on the assumption that the system they study is basically legitimate and in need of adjustment rather than replacement. A researcher who set out to demonstrate that elections carry no information, or that the legislature does not represent anyone, would not be refuted. They would be quietly unfunded, and their students would not be hired.

A science whose central results are career-ending for the scientists is not a science. It is a priesthood with statistics.

This is not a claim about anyone's honesty. Most political scientists believe what they publish. It is a claim about a filter: which questions get asked, which findings get celebrated, and which conclusions can be written in a grant application. Chemistry has no such filter, because no institution is threatened by the periodic table. Political science is entirely made of such filters, because every finding about power is a finding about someone.

Alchemy Before Chemistry

The comparison I keep returning to is alchemy.

Alchemists were not fools. They observed real phenomena, kept careful notes, built apparatus, and developed an elaborate vocabulary. What they lacked was a framework that could make a wrong idea fail. Without one, they spent centuries examining the surface of things, finding patterns in the colours of flames and the weights of residues, and constructing systems that explained everything and predicted nothing.

That is where political science is. It has the surveys, the regressions, the conferences, and the vocabulary. It examines the surface, which is the behaviour of voters and legislators inside a system taken as given. What it does not have is a framework in which "the system itself is the problem" is an admissible hypothesis, and without that hypothesis on the table, no amount of measurement will produce understanding, because the largest effect in the data is the one you have agreed not to look at.

Chemistry arrived when someone was allowed to say that the four elements were nonsense. Political science will arrive when someone can say, in a journal, that the emperor is naked, and keep their chair.

What Would Change It

Not better methods. The methods are fine; the constraint is upstream of them.

What would change it is a source of funding and status that does not run through the institutions being studied. That is a hard problem and I do not have a solution. But it is worth naming precisely, because the usual diagnosis, that politics is just too complicated to study, lets the field off. Politics is complicated. It is also studied by people who cannot afford to reach the obvious conclusions, and the second fact does far more damage than the first.