No one expects anyone to know everything, nor should we expect that of ourselves. But, while being attentive, we will likely discover that we learn something new each day – some lessons small while others of significance. And so we progress.
When we are aware or in the know and choose not to make any change to rectify the issue because it is hard, does not directly impact us, or does not care about the potential negative impact on you and others, there is no excuse. Then, we should not expect indulgence from others for our neglect.
We all have something we can learn and improve on, but whether we act on it is the distinction of character.