He speaks about spreadsheets being malleable-documents..

IF you do any calculating & basic-programming’s something you’re OK with, then PLEASE invest in understanding https://plutojl.org/

& if you decide to dig-in, then please try a good book ( the Design Patterns one is good ) & hit Exercism, & you’re good to go.

MASSIVELY better than spreadsheets, in my view.

Mind-you, I think Julia’s better than spreadsheets AND Python, because it’s cleaner, stupendously faster in execution, etc..

& that suits my aesthetics just fine.

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