Really cool project for a retired engineer to do. Kind of reminds me of the "Notebooks" concept that Jupyter and others use (I dipped my toes in it, not an exp

Really cool project for a retired engineer to do. Kind of reminds me of the "Notebooks" concept that Jupyter and others use (I dipped my toes in it, not an expert). Would be nice if he could abstract the calculators to a list/hierarchy of calculations performed, then be able to "open" limitless additional calculators as desired and swipe between 'em. Being able to see a hierarchy of calculations and say, go back to a parent one and modify the value or part of the calculation itself and have child ones update would be super cool.