https://en.wikipedia.org/wiki/Data_lineage https://en.wikipedia.org/wiki/Data_lineage I see a similar idea about this with things like self-adjusting computati

https://en.wikipedia.org/wiki/Data_lineage https://en.wikipedia.org/wiki/Data_lineage I see a similar idea about this with things like self-adjusting computations, excel and https://awelonblue.wordpress.com/category/language-design/reactive-demand-programming/ https://awelonblue.wordpress.com/category/language-design/re... Should help the debugging process a lot.