His interactive demonstrations almost feel like he is reinventing Excel. And i like it. This kind of symbiose between IDE and program code isnt just usefull fo

His interactive demonstrations almost feel like he is reinventing Excel. And i like it. This kind of symbiose between IDE and program code isnt just usefull for teaching, nor large scale software development.... It seems extremely usefull for "explorations" of data. There is a brilliant application idea hiding behind these ideas.