Phonological structure appears to be hierarchical because there are developmental changes in the sizes of coordinative structures. Phonological variation in the sizes of these structures is conditioned on language, speaker, and style.
Syntactic patterns arise from a mechanism which transiently stabilizes a relative energy hierarchy. The energy hierarchy governs a diverse set of conceptual systems which are coupled and oscillatory.
Articulatory timing can vary substantially, even during the course of an experiment. Fluctuations in timing patterns reflect arousal, which can modulate interactions between phonatory, articulatory, and postural systems.
Every communicative interaction has the potential to change us. By studying the co-evolution of social and linguistic systems in controlled experiments we can gain a better understanding of how language patterns evolve in time and in space.