Dear Richard,
I think you are onto something here with tiered learning. Your observation about TiddlyWiki being used by people for personal and valuable information is a valuable one. There is a lot of emotion bound up in ones personal notes, and TiddlyWiki is the vehicle for connecting and grouping personal insights.
One of TiddlyWiki's many joys is the way it gently pulls you into wanting to learn more about it. Thinking back to my first encounter I think it was editing a tiddler TiddlyWiki.com and making a link. It's the experience of using which got me hooked. Before long I wanted to change the colours - I then encountered the warmth of the community - some of which I now recognise as being part of many open source projects. It was my introduction to open source culture and looking back it has had a huge impact on the way I think about many things. Everything should be open source, everything should be run like TiddlyWiki: my car, house, kids school, local governant.....
Måns made an observation that tiddlng can be a therapeutic activity. I must not be the only one not totally focused on producing a set of notes for a groundbreaking use case (thanks to TiddlyWiki I now use words like ’use case') -- the activity of tending to my TiddlyWiki is to enter a mental zone where problems can be solved, people are diverse, interesting and polite.
The diversity is especially interesting to me, and as an English person subject to a public discourse where anti-European sentiment is all pervasive, it's wonderful to find myself communicating with fellow Europeans. It's refreshing - so much of online culture and popular culture in general comes from the USA. TiddlyWiki culture has a certain feal about it. And it it TiddlyWiki worked 'too well' - nobody would have any problems and the side effect of an emerging culture would simply not occur.
Back to tiered leaning... TiddlyWiki.com could host many TiddlyWikis, the one which new people see could be minimal. The user could simply edit a tiddler the download it. The simplicity of a new fresh TiddlyWiki on one URL - minimal beauty there to see and experience. A 'blank sheet of paper' ready for ideas --- so enticing a premise. (In the past if I had a new idea I'd go through the ritual of buying a new notebook, a new pen or something - now I get a new TiddlyWiki)
After editing, and downloading, and getting comfortable with tagging, I think the next step is using a tag to change the appearance, using the style sheet tag. I though Stephan did something rather cool in an answer to a question. Rather than giving the answer he gave an example and encouragement to use it on TiddlyWiki.com. I thought that this was a breakthough - it reinforces the idea that once in the browser TiddlyWiki is yours and yours only - there is no server connection!
And 'THERE IS NO SERVER CONNECTION' is quite a big thing to deal with... I think it takes a while for the penny to drop. It opend up a huge number of possibilities - being told that TiddlyWiki can be emailed, stored on a data peg or put in a drop box all follow on from this astounding fact. I'd emphasise that this is really a big thing for people I am introducing to tiddlywiki to understand. Even technical people don't see the benefits - rather they thing because its got no server then it's a toy for those dabbling in development.
The latest step for me has been towards GitHub. I can see how beneficial it is. Again this is a big step, and it along wth TiddlyWiki offers more insight into coding culture - a culture which non coders can derive benefits. For example, academics are now using GitHub for colaboration on papers. GitHUb has jumped the gap. Having a TiddlyWiki with all the documentation available from GitHub could be something to concider. This would introduce the idea that documentation is part of the TiddlyWiki experience. If you want to delve deeper into TiddlyWiki the notion of co-creating knowledge and documenting it is part of being part of the community -- if you want. It's also an entry into 'how knowlege should be created' in more general terms. A learning practitioner should be engaged in reflective practice and sharing knowledge in a community - this is what academic publishing is all about, or should be about: it's lack or open source ethos is only just beginning to be adressed - most knowledge is behind the so called academic firewall.
Einought for now--'real life' calls...
Alex