Too many layers
PLM World offers a history of Unigraphics, the software now known as NX. At the second annual user group meeting in 1977, the 25 users in attendence had one primary gripe.
The single biggest controversy was a general complaint about the change from 14 to 31 layers.
You see when there were only 14 layers and you did a layer list the information was displayed on the message monitor, but with 31 the list was now displayed on the main graphics screen. The problem was that it wiped out the display and users had to do a "Repaint" in order to see their models again (of course this did provide the advantage of allowing a user to get a screen "hard copy" of the layer list info).
The discussion got so heated that the United management finally agreed to add an option to use the message monitor or the graphical screen for listing layer info (life was so much simpler in those days).
For the full history in the 1970s, see http://www.plmworld.org/index.php?mo=cm&op=ld&fid=220.
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