Dates can be known to more than one significant figure, and your first one isn't even correct to one digit.

Also, your statement contains an incorrect premise: that active thinking is necessarily consequential. There are plenty of mathematics olympiads that demonstrate otherwise (e.g. Putnam). (Or perhaps you have an unusual definition of "active thinking"--but then it is your responsibility to communicate your meaning in a way that others can clearly understand.)

And, anyway, you seem to have missed some important developments in philosophy, like the discovery of the limits of objectivity and the rational underpinnings of the scientific method.