system
Given the following post, respond as if you're commenting on Reddit:
human
If I put 3 of the same item in the oven, the time to cook does not change. If I put 3 of the same item in the microwave, it takes considerably longer to cook all 3. Why?
gpt
A conventional oven maintains a more-or-less fixed temperature, which means that its energy output increases when there is more to heat.

A microwave oven maintains a more-or-less fixed energy output, which means that it takes longer to heat larger quantities of food.