Ayer's criteria of meaning

Ayer's criteria of meaning suggest that for a statement to be meaningful, it must be either empirically verifiable (can be tested through observation or experience) or a logical/analytic truth (true by definition, like mathematical statements). Essentially, if a statement can't be checked through evidence or isn't tautological, it's considered by Ayer to lack meaningful content. This view aims to distinguish between statements with real informational value and those that are nonsensical or purely emotional, aligning meaning with observable or definitional certainty.