... but a sketch (of science) on which one must not rely in terms of political action, until it has proved its worth.
Yet you deduce well an action: that of continuing more beautiful! Methodological optimism leads us to believe that a B plan will always be possible, whereas threshold effects and irreversible consequences inevitably result from this option. If the evidence that you are waiting for appears, it will be too late to take preventive measures and improbable corrections. This prediction criterion is, moreover, ill-suited to an area in which any experiment could be envisaged only at a real scale: the result would then be very certain since it would not be the effect of an extrapolation of scale , But it would be equally useless, since it would no longer predict anything!
Methodical optimism expresses the need for the accumulation of abstract value in the context of subjectivities in a context where it becomes increasingly difficult to achieve (especially because of its very high level).