> What distinguishes print from electronic media that means that justification works in one place but not the other? Browser are pretty bad typesetting engines

> What distinguishes print from electronic media that means that justification works in one place but not the other? Browser are pretty bad typesetting engines. Word breaking doesn't work very well, they don't and can't do protrusion or expansion. The low resolution of displays means you microadjustments don't really work, because they at most slightly shift contrast from one anti-aliased edge to the opposing edge. Justified text works very well if you're able to competently apply all those techniques (e.g. MS Word and similar document editors didn't do any of that for a long time). Bad justification results in rivers, uneven spacing, broken edges etc.