What rhetorical device is used in the following sentence: "you might think that if learning is essential to our survival, the fact that we forget information is a bug in our biological software." note: the article is titled "to make computers think like brains, we need circuits that forget." i know that they used "bug" and "biological software" to connect to the idea of technology in the article, but i do not know what the rhetorical device is for this.