A+. Feedback: I instantly understood that it was something similar to Jupyter, and my very first mental question was "I hope it's in JS", and this took a surpr

A+. Feedback: I instantly understood that it was something similar to Jupyter, and my very first mental question was "I hope it's in JS", and this took a surprisingly long few seconds and two page navigations to establish -- I expected the choice of language to be on the splash page. Anyway, very well done, and it's quite clear to me that JS is going to trounce Python for nearly everything long-term. The JS ecosystem is just an unstoppable freight train.