  Second, interpreters have also scrutinized the exact nature of the Antinomy. Insofar as the thesis and the antithesis are regulative principles, they may be seen as research policies, and those can be pursued separately, at different times, hence with no contradiction. Then why are they antinomic? Watkins (2009, § 2.2) explains that the two theses do not just recommend explanatory policies but express commitments to judging in a determinate way about biological phenomena. As such, they would be contradictory commitments: to judge organisms purely mechanistically and to judge them non-mechanistically. Teufel (2011) reads the two theses as hypothetical imperatives, imposed upon reflective judgment by practical reason. The Antinomy ensues, he contends, because they demand contradictory courses of cognitive conduct: to judge that mechanistic laws suffice to explain organisms and that they are insufficient for that task. 