Yadiastun kaanggén jimbar miwah jangka panjang, BSC sekadi sané tiosan taler makta pikobet pabligbagan, minakadi konsep puniki nénten prasida kaanggén ring prokariota, miwah kasengguh pikobet spesies.
Despite its wide and long-term use, the BSC like others is not without controversy, for example because these concepts cannot be applied to prokaryotes, and this is called the species problem.