The fact that Big O notation is sometimes misleading or not helpful is not evidence that it is not generally useful.
https://www.tumblr.com/accidentallyquadratic
As a concept it is pretty useful for me in a handwavy astrophysics math way because I otherwise wouldn't necessarily know how to make my naive solution fit real world constraints.
As a concept it is pretty useful for me in a handwavy astrophysics math way because I otherwise wouldn't necessarily know how to make my naive solution fit real world constraints.