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Correct - Virtually all apps are "use only as intended" and are not scriptable - most apps cannot share data - WWW is heavily read/write asymmetric ( ie easy to read pages - impossible to change them yourself)
The entire model of software production has yet to reach its full potential. Personal computing still hasn't happened. It should be /very straightforward/ for a minimally-trained person to add features like this to their own music player.
alex hern on Twitter
“"I want to be able to add entire albums to playlists and then shuffle the playback not by song but by album." YES. I've wanted this feature since the iTunes days”
7 replies and sub-replies as of May 10 2018

Quite, we need generative tools for making tools, Smalltalkesque
I wonder if @BrendanEich is working on alleviating some of that with @brave.
We gave a grant to @pfrazee et al. for dat: support in Brave, and to advance @BeakerBrowser as frontier scout on the dat:-based writable/forkable web idea. I'm looking forward to Brave fast-following.
I think this is completely accurate: the PC Revolution never finished, and it's on the backfoot now. The industry dropped live/moddable software for well-packaged applications. A writable Web is a live and moddable Web. Bringing back the fight.
The "injected script" model of extensions is also to blame for poor scriptability on the Web. If extensions could export well-defined APIs which sites can query and consume, we'd have a much more powerful customization environment. As it is, extensions interact w/apps via the DOM
In every other situation we expect well-defined APIs with semvers when code interacts. In Web Extensions, we yolo inject scripts into the page and monkey with the internal code. Complete lack of encapsulation or contract.