I find these premises unconvincing: 'Collective memory and attention are sustained by two channels: oral communication (communicative memory) and the physical r

I find these premises unconvincing: 'Collective memory and attention are sustained by two channels: oral communication (communicative memory) and the physical recording of information (cultural memory). ' There are other means of sustaining collective memory and attention, such as performative actions, rituals and beliefs (if you can call beliefs channels - I don't have a definition for channels). If the first sentence is loose like this, I'm not optimistic for the modelling and variable construction for the rest of the work. I'll have a close read of it, but this is a disturbing sign.