You don't necessarily need to be able to sit down and formally write out the exact amortized big O complexity, (or little O, [O|o]mega or theta) but equally it's good to have some idea of how something would scale.
If you have a good idea of how things scale, being able to express exactly how they scale with succinct and clear notation is useful. Quite useful in fact.
That's why formal notation exists, because it is handy. Not because there is an eternal, global conspiracy among academics to keep up useless habits just to show off.
Comments
You don't necessarily need to be able to sit down and formally write out the exact amortized big O complexity, (or little O, [O|o]mega or theta) but equally it's good to have some idea of how something would scale.
If you have a good idea of how things scale, being able to express exactly how they scale with succinct and clear notation is useful. Quite useful in fact.
That's why formal notation exists, because it is handy. Not because there is an eternal, global conspiracy among academics to keep up useless habits just to show off.