Ordinary language is all right.
One could divide humanity into two classes:
those who master a metaphor, and those who hold by a formula.
Those with a bent for both are too few, they do not comprise a class.
If a 'writer's sketchbook' is to be for practice, as an artist's is, then perhaps that suggests why the private blog seemed to have been a new possibility. A writer like Thoreau did achieve a kind of practice in his journal, I think. And the resolutely private status of most of it meant that its writing could be perfected on terms appropriate to a practice, without interference from external goals and purposes inevitably attaching to publication as then institutionalized. But it would be different still, and arguably at least as true to what writing is, for a 'sketchbook' writing practice to exploit universal, instantaneous publication.
'To speak truly, few adult persons can see nature. Most persons do not see the sun.'