Most political argument happens at second hand, over descriptions of documents rather than the documents themselves. The originals are usually public and usually shorter than expected.
Summaries compress in a direction
Any summary discards detail, and which detail gets discarded reflects what the summariser thought mattered. That judgement is not neutral even when it is honest.
A bill described as doing one thing may contain exemptions, effective dates and definitions that change its practical scope considerably.
Reading the text does not make a reader an expert, but it does reveal whether the summary and the source are describing the same thing.
Legal documents are structured for skimming
Court opinions state their holding early and mark their sections clearly. Legislation opens with definitions and purpose clauses, and regulations carry an explanatory preamble written for non-specialists.
These conventions exist because the documents are meant to be used rather than admired. A reader who learns the structure can reach the relevant passage in a couple of minutes.
Length is also misleading. A very long bill is usually a small number of substantive provisions surrounded by conforming amendments to existing statutes, which nobody is expected to read continuously.
Disagreements often collapse on contact with the text
A large share of political disputes turn out to be about what a document says rather than about what should be done. Those are resolvable.
Once both parties are looking at the same paragraph, the argument either ends or becomes a genuine disagreement about values, which is more productive.
The remaining disputes are the interesting ones, and they are easier to conduct when the factual layer has been settled.
Transcripts outrank characterisations
Descriptions of what a person said are shaped by selection, tone and framing, all applied before the reader sees anything. Full transcripts and recordings remove most of that layer.
Where a quotation is contested, the surrounding sentences usually settle the question, and they are frequently omitted precisely because they would. Reading the paragraph either side is often enough.
This applies symmetrically. Sources that flatter a reader's existing view compress and reframe just as much as sources that annoy them, and the check costs the same either way.
The practical habit
The habit worth building is small: when a claim about a document matters to you, open the document. Most legislatures and courts publish everything online.
Search within the file for the specific term under discussion rather than reading front to back, which turns an intimidating document into a two-minute check.
Doing this occasionally also recalibrates how much trust to place in particular secondary sources, which compounds over time.