While we're on the topic of 'stumbling' (which I prefer to consider an innate ability

), I saw two interesting documentaries last night: one about music and its ability to train the brain. This may have some relevance to your thread, Lloyd...
The first sounds in human communication are
pitch-related. While music mainly engages the right-brain, Learning music as a child, whether it's playing or singing, enhances congnitive ability. It plays a positive role in improving language skills - in particular, syntax/grammar. Of course, different cultures, not only speak different languages, but have different musical styles. It was observed that vowel length and pitch in spoken language equates to notes in music.
Music utilizes the auditory system to engender
motion. This includes not only the urge to dance or move to the music, but also serves to restore normal movement to brain-damaged patients, in this case those with Parkinson's Disease.
Here's another brilliant case in point -
http://www.youtube.com/watch?v=XM6Mbv8hzH0 - hope you enjoy as much as I do!
The final (and obvious) conclusion was that music is the tool for social connectivity...nothing like a huge audience revelling in synchronized motion...in
phase...?