You can think of artful as a word that always points at the same thing: somebody's hand was in this. Whatever you are looking at was arranged on purpose, by a person with skill. The word does not say whether that was kind or not. Point the skill at another person and you get trickery; point it at a photograph or a table and you get something well made.
artful 可以想成永遠在指同一件事：這裡有人動過手。你看到的東西是被刻意安排過的，而且安排的人有本事。這個字本身不說這是好意還是壞意。把這份本事對著別人用，就變成算計；對著照片或桌面用，就變成好看的作品。
From the word’s history
The evidence packet gives the word as art plus -ful, where art means skill gained by study or practice, and -ful means full of. Literally: full of skill.
提供的來源把這個字拆成 art 加 -ful：art 指的是靠學習或練習得來的技巧，-ful 表示「充滿」。字面上就是「滿是技巧的」。
Wiktionary, "artful"
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