It’s disappointing to have someone’s misguided hot take get lots of attention. There’s nothing inherently wrong with Notebooks, just like there’s nothing inherently wrong with a command line REPL. They are tools. Sure, neither is a great choice for coding a million-line application, and yet the REPL is the better choice for one-liners, and the notebook is the better choice for a few plots or developing a 10-line algorithm. I’d rather read something thoughtful about when and how and why to migrate from a notebook to something better. Making that easier, without judgement, is going to do a whole lot more good than attempting to shame people with a bad analogy will do. Anyway, McDonalds has scaled larger than any other food chain in the world, so the title is accidentally paying a huge compliment to Notebooks.