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Diagramming every LSAT question wastes time. Diagramming none of them costs you points. The real skill is knowing when to draw and when to skip.

Diagram when you see formal conditional language: "if," "only if," "unless," "no," "all," "any," "requires." These signals mean the relationship has a specific direction that's easy to reverse in your head. When you have two or more conditionals that might chain together, or when a question asks you to combine rules, get it on paper.

Skip the diagram when the argument is causal or evidence-based — most strengthen, weaken, and flaw questions don't need one. If there's a single simple conditional you can paraphrase in a sentence and feel sure of the direction, you probably don't need to draw it either.

The most important habit: check your diagram after you draw it. Read your arrow back as an "if... then..." sentence and compare it to the original. If they don't say the same thing, your diagram is wrong — and a wrong diagram is worse than no diagram, because it gives you false confidence.

The core of conditional logic — sufficient vs. necessary, contrapositives, chaining rules — talsat

lsat prep

law school

logical reasoning

kes most people about a week of focused study. You don't need a logic background. You just need to diagram the genuinely hard conditionals and do the easy ones mentally.