It is easy to spot when someone else is in a hurry. We notice the window cleaner misses a bit or leaves a smear, or a cleaner misses a cobweb or so, or the vegetables in the restaurant are not cooked, or are cooked too much. That all indicates a lack of attention.
It is easy for us to judge, but we have to keep an eye on ourselves too. Have we rushed that report? Is it up to our usual standard? Have we made sure our client understood it? Have we remembered to follow up and speak to our customer to make sure they are happy?
Sometimes a dissatisfied customer will find a new window cleaner and complain to their neighbours and friends about the one who left the smears. We could be replaced as easily. Perhaps we need to slow down and think what we are doing, otherwise we will be in the same boat as the window cleaner.