system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How is blue cheese a safe "mold" to eat?
gpt
Same reason the Amanita caesarea mushroom is safe and delicious but Amanita phalloides will kill you dead.

Molds are not one species. It's an entire group of organisms. Some are toxic, some are not. Cheesemakers are very careful that the ones they introduce fall firmly inside the former camp.