If your automation breaks on day 1 of your vacation, you’re now forced to spend some of your vacation fixing it. Hope you were checking email.

Yes, it’s way worse. I made this mistake on a couple different glass beds of differing thicknesses, and each time, the print was so fused to the bed that it was impossible to remove without breaking the glass. One or two times, I completely shattered the glass. Another time, I went super slow and tried to get some warm IPA to wick under it, which sometimes helps prints release, and when I eventually got the print off, it still took a large chip of glass with it. It’s not even “adhesion”, it’s like the carbon fibre diffuses into the glass and creates some kind of next-level bond, almost epoxy-like lol.

Printing CF-PETG on glass. It becomes one with the buildplate.

It’s also worth mentioning that sockets aren’t a real layer, because they’re just an API at the OS level (they’re an abstraction to let application developers use TCP/UDP/etc.). ALSO, in some interpretations, everything above Layer 4 is debatably just the application layer. There’s not necessarily a clean separation between the presentation layer and “application layer” in all applications. That said, the 7 layer model is still useful as a teaching too, but knowing these extra details will give you a more complete understanding (and be less confusing).