Re: [LAU] one general question concerning puredata

the short answer, in the terms your question was posed in, is datastream management. the slightly longer answer is that pure data (and max) are derived from the original Music N language's conception of how to manage this kind of thing (the same ideas still found in CSound and SuperCollider). even though they have gone far beyond it, they continue to distinguish between audio & control datastreams for reasons that are mostly related to efficiency. there are many, many cases where control data being delivered at a bits-per-second rate significantly below that of audio (or even as a stream of events rather than a constant flow) is more than adequate, and saves a lot of CPU cycles.