Professor Conor O'Mahony:

The recommendation in that regard is that there needs to be a definition. One of the key guiding principles is that the legal and regulatory environment needs to be predictable. If concepts are left undefined in a way that allows for a huge amount of subjectivity concerning what falls within a definition — the term "pornography" is notorious in legal terms in that respect — people will often not agree on what comes within the meaning of a term.

It is a matter of trying to comply with the requirement of clarity and predictability for people. I do not want to offer a particular view on how that definition should be phrased. However, it would be better to have a definition of key concepts that determine what is or is not captured by the Bill rather than leaving terms that are known to be subjective undefined in a way that invites disputes.