3.A Claims That Require a Defense (CLE-1.A, CLE-1.D)

A thesis has one job: promise a defense the rest of the essay will carry out. That promise only means something if the sentence could be wrong in someone else's eyes. 'Mount Everest is the tallest mountain on Earth' fails instantly, because no informed person disputes it. It is a fact you could footnote, not a claim you could argue. Test any candidate sentence by hunting for that reasonable disagreeing reader: if you cannot picture someone who knows the subject and still pushes back, the sentence is not a thesis yet.

Turning a fact into a claim usually means adding an interpretation, a cause, or a value judgment that smart people could contest. 'Social media is popular with teenagers' is just data. 'Social media has replaced face-to-face friendship for teenagers' invites real pushback, because someone could argue the opposite with the same evidence. Notice that volume or heat does not create defensibility. A statement shouted loudly, or one that sounds edgy, is not automatically arguable; what matters is whether informed people, calmly looking at the same facts, could land in different places.

Qualifiers like 'in most cases' or 'in districts where' do not weaken a claim, they aim it. Narrowing scope trades territory for precision: the claim covers less ground but defends that ground completely, since counterexamples outside the narrowed scope no longer count against it. This is where claims and evidence meet. The shape of your claim decides what evidence is even relevant, since a narrowed, causal, or evaluative claim demands evidence that addresses that exact scope, not just related facts in the neighborhood.