 enough to pick the right aspect of things not to ignore.
Moreover, for a simple but nevertheless social creature, falling
into line with what some society has agreed whole-sail to ignore
is an important aspect of the isolated creature's enculcturation.
And there is, of course, some survival value in that.  But, I am
sure that everybody understands that the way of ignorance is not
plotted for a long term survival story, not for one, not for all.

Last time I took up the way of the engineer and the way of th