H2cm provides a filter, helping learners and experts alike, to make sense of the noise and background, as Winograd and Flores (1986) explain:
‘… background is a pervasive and fundamental phenomenon. Background is the space of possibilities that allows us to listen to both what is spoken and what is unspoken. Meaning is created by an active listening, in which the linguistic form triggers interpretation, rather than conveying information. The background is not a set of propositions, but is our basic orientation of ‘care’ for the world.’ p.57-58.Source: Winograd, T., Flores, F. (1986). Understanding Computers and Cognition, Addison-Wesley.