The Angels Write down What you Do [Taf'aloon].
وَإِنَّ عَلَيْكُمْ لَحَافِظِينَ
And indeed, [appointed] over you are keepers,
Noble and recording;
يَعْلَمُونَ مَا تَفْعَلُونَ
They know whatever you do.
(Infitar 82: 10-12)
Two words could be used to describe the angels writing the actions that you do:
'Aml or Fi'l.
Both words loosely translated would mean; To do an action. So why do the angels write down what you Taf'aloon?
'Aml عمل : To do an action based on Intent. An action you do with intent/with conscience. Ie. Your intended actions/deeds; Eating, Watching with focused intent, hearing with focused intent, reading etc.
Fi'l فعل : To do any action. an action you do, even without thinking about it. Ie. Breathing. Seeing, hearing, blinking etc.
The Angels witness and write down what you Taf'aloon; anything you do - they write it down without exception.
They don't know your intentions, so they don't write down any of your intentions.
Allah will judge people on Judgment Day, and some people will have mountains of good actions recorded for them by the angels. However, they will not be rewarded for them - because they had no sincerety to Allah in their actions.
So we should strive to do good 'Aml, not just good Fi'l.