The perceived usefulness of an article is inversely proportional to its actual usefulness once bought and paid for.
買う前の便利さと実際の便利さは、買ってしまった後は反比例する
グラタムの物欲の法則
The perceived usefulness of an article is inversely proportional to its actual usefulness once bought and paid for.
買う前の便利さと実際の便利さは、買ってしまった後は反比例する
グラタムの物欲の法則