# Literatur
## [Sketchpad Demo (1963)](https://www.youtube.com/watch?v=6orsmFndx_o)
## [Visual Programming Languages: A Survey (1997)](vpl.pdf)
Visual Programming Languages -> VPLs
## [PYGMALION: A Creative Programming Environment (1975)](https://worrydream.com/refs/Smith_DC_1975_-_Pygmalion.pdf)
by David Canfield Smith, inventor of Icons and one of the pioneers of the modern GUI
People remember things in terms of pictures
Images are the primary component of creative thought
## [Programming in Three Dimensions](https://marc.najork.org/papers/jvlc1996.pdf)
Humans are really fast at processing visual information, so when we display part of the programs structure in a visual way it is easier for us to reason about it.
