 Reichenbach’s most enduring distinction is between “the context of discovery and the context of justification.” But Reichenbach did not always allow the distinction, and the distinction he intended is not quite the one commonly attributed to him. In his 1922 essay on “The Philosophical Significance of the Theory of Relativity” (1922c) the (now conventional) distinction between the context of discovery and the context of justification is formulated in other terms, and rejected: