my job at the state has me taking waste water classes. they require a certified operator for their water treatment system. i didn't have a calculator since the kids destroyed the last promotional one i received for some convention years ago. the last class i took had loaner calculators. during this first class they said i'll probably need a calculator. calculating the amount of chlorine necessary to treat the water in a ten inch pipe two miles long requires ME to use a calculator. i looked at calculators and decided that i'd spend a few of extra dollars to get a better one that maybe tristan can use in a few years for pre-algebra.
when did this happen? i guess i realize it has been possible for quite some time but this is crazy. when i took pre-algebra it was the only a few years before that they hadn't allowed calculators in class. logs were still in huge volumes of tables and needed to be looked up and applied. i even learned to use a slide rule because it was a skill that i might still need. what will they do next? or maybe they already have and i have yet to discover it.
i remember when i learned to use my RPN calculator and that felt like cheating, NOW this really feels like cheating. the answer as a fraction, where have i been? i feel like rip-van-winkle.