[potatochup]

I've done code reviews on paper, although mostly when I want to understand something, not for review purposes.

[rovr138]

I've printed long, MESSY, code, huge functions, to review and cleanup.

I loved working with engineers and using their plotter for that. Had a ton of space to actually write things out and draw connections.

[someweirdperson]

I used to carry a red pen at all times for that purpose. Very useful when people had some hardcopy.

That use-case died with the invention of virus-defined wfh.