Those machines came and went a bit before my time, but I do recognize the sense of excitement and power I feel in notebooks in the recollections I’ve read.
Similarly, comments about ‘how do I distribute a Smalltalk program if it’s just the image of the entire VM’ rhyme just a bit to my ear with ‘how do I share my notebook with my coworker if it’s really the agglomerated state of my interpreter and language environment’