We will be hurt and get irritated too when somebody points out our mistakes. This happens in our annual performance assessment report, audits, discussions (arguments?) with colleagues / partners / spouse / children / etc.
However, there is a saying, "It is easy to find mistakes in others, Difficult to find our own mistakes".
When we take it positively, look at it with a peace of mind, we feel we should thank those who find our mistakes because they have done our job.
As per another saying, " a problem found is as good as half of the work is done, we only have to find a solution". The problem is our inability to find the problem.
Recently, I watched a movie titled, "Hot Shots! Part Deux" in TV. A dialogue in the movie is, 'we all have permission to make mistakes. It is called learning".
A long time patient sometimes, is better than a doctor.
Learning from past accidents (mistakes) is what we should do. Like we can't have life long schooling, we can't be continuous learners, making same mistakes again and again. We have to learn from our mistakes and those of others who suffered.
Safety officers/inspectors during inspection / audit find the deficiencies and communicate to plant in-charges. Plant in-charges should thank these lot for finding the deficiencies and for helping them to work for a better workplace.