On Thu, Feb 16, 2012 at 9:38 AM, Derek O'Connell <doc at doconnel.f9.co.uk> wrote:
> Long video but should be of interest to Squeakers...
>
> Video: https://vimeo.com/36579366
>
> Reddit post:
> http://www.reddit.com/r/programming/comments/ppnlg/inventing_on_principle_bret_victor_shows_what/
>
> Bret Victors site: http://worrydream.com/
>

I saw this video yesterday and though about Thing Lab
http://www.cs.washington.edu/research/constraints/videos/thinglab-1978.mov

I understad how he can change number types with a slider and other
simple value types but if the system has a object of some kind as a
variable value
it must be harder to direkt manipulate. He would need a Inspector. It
would be like programming in de Smalltalk debugger with Inspectors on
objects :-)


Karl