Ah, yes. I remember this.
I have spent the bulk of today working on a layout project, where I’m fiddling with making things line up to the thousandth (yes, thousandth) of an inch, and going cross-eyed, and deciding if a leading of 28.2 or 28.3 works better in this situation, and exporting to PDF to make sure that things look the way I think things look, and generally not coming up for air for several hours.
And I’ve been loving every minute of it.