[woah]

I think that more precision over application of formulas would solve a lot. Arrays are mapped over by copying the code for each array element by dragging it across a row of cells, and the arguments to the formula are automatically mutated based on where the code is dragged to. This can be error prone.

More concrete definitions of where a formula should apply would be good, for example, leave the formula cell in one place and specify that one argument should come from this range of cells and the other from this range of cells, and the output should be mapped to this range.