Postscript was the foundation of the desktop publishing industry. In order for high-resolution printers to be useable through slow interfaces, it was necessary to send a programme to the printer.
In order to reduce the size of their postscripts, programmers became creative: very creative!
All the Horrors of Rome, creative.
In general, people who write programmes in scripting languages do not concern themselves about memory requirements.
This means that, on any given day of the week, something one was attempting to print would simply fail.
Postscripts being all a totally illegible mess, there was no reasonable way to find the root cause.
Thus graphic artists had to become creative--very creative!
It has been said before, but it is worth saying again, that colour as we know it has three dimensions: if scanners are able to add the black component (which is necessary as a technicality of printing) from RGB data, why then can printers not do so?
On the whole, desktop publishing seemed like a good idea at the time, only with future technology.
Now, who coined the term Information Technology?
Related: Magic (1,0).