system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is the glass on our phone screens more slippery than the glass in windows?
gpt
The glass in your phone has special coatings to make it slippery.  You drag your finger across it constantly so it needs to be slippery.

Window glass need to be glass.  That’s it.  Were you to make windows out of iPhone glass they would be prohibitively expensive.