Practical criteria cannot depend on a supposed scientific...

Practical criteria cannot depend on a supposed scientific method and cannot aspire to confer absolute certainty on our decisions, but we do not have to go without reason in practical situations, as there is no need to identify reason with a supposed scientific method or with the sure way to certainty.

In part, the obstacles encountered by Hume and Descartes in the development of an idea of practical reason have been abolished, for today we are aware that sciences are not governed strictly by the Cartesian method or by the inductive method, and that they are far from reaching complete certainty, which does not make them directly irrational. Above everything else it is the renunciation of the obsession with certainty that enables us…