BODMAS, BOMDAS and DAMNUS ... the sequel

摘要

Firstly, a general comment with regard to mnemonics. Our brains find it a little difficult, at least in the short term, to remember more than six or seven items. Mnemonics can help by bundling several items into one, which, of course is much easier to remember. However, many, if not most, mnemonics also require some sort of "support" information, without which the mnemonic is of little benefit, and so it is with the BODMAS mnemonic and its variants. But more on that later.