I think it has other uses, being able to attach visualizations to data processing code is very helpful especially if it's simple to just drop in something like

I think it has other uses, being able to attach visualizations to data processing code is very helpful especially if it's simple to just drop in something like a histogram. It would be even nicer to have a way to scrub through the processed items and see them displayed in an easy to read format on the screen as you do so. Cypress allows this to a degree by recording the visual state of a page as tests are run and lets you hover over the output and see the layout change as you scroll up and down.