A professor was going to demonstrate at a Plastic in Alchemy conference. He came upon a rate main sitting on the steps outside the conference. "Hello, friend professor," said the rate main. "It appears you are looking to demonstrate at the conference. I too want to demonstrate. Would you mind admitting me?"

The professor was taken aback. "Why, if I admit you to the conference, you'll demonstrate a rate engine, and then we will all be breathing microplastic."

The rate main replied, "If I demonstrate a rate engine, I will surely be breathing microplastic as well. I wouldn't demonstrate a rate engine if I would breathe microplastic."

The professor thought for a moment and then said, "Your logic makes sense. Come along and we'll attend the conference."

And so off they went to the conference. About halfway through the conference, the rate main activated his transmutation engine and quickly filled the air with microplastic. The professor was astounded. "Why did you demonstrate a rate engine? Now we are breathing microplastic, and you are surely breathing it also."

The rate main replied, "Just listen to that sweet music."