Professor Niamh Hardiman:

That is my point. Rules-based enforcement of conduct can only ever go so far. What is every bit as important is building cultures based on the ethos one would like to see developed. This is based on interpersonal expectations about what is appropriate in exchanges and relationships that are often unspoken. Codes of conduct can codify these things and in so far as they help to entrench norms and diffuse people's expectations about what is appropriate, they are very important. Again, it is only through talking, debate, criticism, exposition and critiques that we can keep these to the fore in everybody's mind.