https://youtu.be/bdfNvYPxkOY. And https://www.felienne.com in general, at least where spreadsheets are concerned. Two monitors - one for Excel, one for the VBE - is not Smalltalk, but it is productive. At least for n=1, since the '90s.
Thanks for reminding me to check if the REGEXEXTRACT, REGEXREPLACE, and REGEXTEST functions had landed for me yet. They have! Good, because sometime in 2027 the library providing RegEx in VBA will be yanked. https://youtu.be/pGH9LdgkJio
MS Office Tools menu has a "Spreadsheet Compare" application. It is quite good for diffing 2 spreadsheets. Of course it cannot catch logic errors, human or ML.
Thank you for your tone. I agree! Had Starting Forth, Thinking Forth, and Elizabeth D Rather books at one time. Reread TCL the Misunderstood (Antirez), every few years for the memoizing bit. Etc.
I will read it, closely, but was all hopped-up expecting some new implementation, as I am down the Smalltalk rabbit hole lately, including watching lots of old videos. And perusing https://selflanguage.org