> any professionally designed book published for the last hundred years on the shelves of anyone reading this With respect, that's an incorrect assertion. I ha

> any professionally designed book published for the last hundred years on the shelves of anyone reading this With respect, that's an incorrect assertion. I have books on my shelf published up through the eighties with wider spacing between sentences. A more accurate comment might be that in the modern design era, and I'd guess this is approximately post-WW2 onwards, sentence spacing became less common and it is now common or standard not to. That clarification is true. How do I know? I like wider sentence spacing (see my comment above on this thread) and have kept an eye out for it in books when I buy them. I suspect it was computers that killed wide sentence spacing: the web, as seen in the linked discussion thread, combined with word processors that weren't as capable as TeX and didn't support it. Here we are thirty years later and it's become the absolute norm, so much we can barely imagine an alternative. But I regret that technical decisions and limitations have left us in this position.