Although Lucas is not the contriver that reason anticipates theory, but the active advocate that is this theory all the time however.

卢卡斯虽然不是理性预期理论的发明者，但却一直是该理论的积极拥护者。

youdao

Whereas Robert Lucas (Nobel Prize 1995) provided the theoretical foundations of rational expectations theory, Thomas Sargent tested rational expectations against real-world data.

FORBES: Thomas Sargent, Rational Expectations And The Keynesian Consensus