system
Given the following post, respond as if you're commenting on Reddit:
human
Why do ice cubes freeze together when in a glass of water? Isn't the ice melting, not re-freezing?
gpt
Overall the ice is melting, but in small areas it can be refreezing. So where the ice is predominantly surrounded by the much warmer drink, it will be melting; but where two wet ice cubes come very close together, small amounts of the water may be isolated enough from other warmth that the sub-zero temperature of the ice cubes may cause it to freeze between them.