Marks made by the brush and knife serve different purposes from the late nineteenth century. They also beg some fascinating questions.
brushstrokes
Looser and more painterly styles from Guardi around 1775 to Delacroix in 1862: paving the way for the Impressionists.
A glance through some of the unofficial history of visible brushstrokes and other painter’s marks.
There is a strong correlation between the number of clicks required to complete a task and your subjective feeling of dissatisfaction with that app’s human interface.
The Eclectic Light Company 