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Having read some more, and watched the 2018 video, I now understand that ditching operator precedence was a necessary sacrifice to make your interactive environment something that could be implemented in a reasonable timeframe.

like lisp and forth, the moving of things to/from variables is removed from primacy, to good effect. being able to use a result without having to name it is a quite powerful tool.

As with spreadsheets, the absolute or relative location can fill in as a address. Perhaps there should be some relative addressing for code, as you hinted ^ with spaces around it is the previous result.

Yeah, I've gotten a lot of pushback on that. One approach I've seen is to reject expressions that would violate standard precedence, and require extra parentheses.