system
Given the following post, respond as if you're commenting on Reddit:
human
Why don’t we use metal cubes instead of ice cubes?

Since metal can get a lot colder than ice can wouldn’t it made more sense if we would use metal cubes?
Also you could use metal cubes multiple times.
gpt
Metal and ice can get equally cold. They get as cold as the freezer they're in. Ice has a greater heat capacity than most metals, meaning it stays cold for longer, and there is a large latent heat when it melts, which means it absorbs a lot of heat from the ambient water without changing its own temperature as it melts. This allows it to cool down water by warming and melting more than the same size cube of metal could.