By Eric J. Savitz In yet another feat of digital alchemy, artificial intelligence has transformed the memory chip producer Micron Technology into a rip-roaring growth stock. Investors with long memories will be skeptical that this new version of the Micron story is sustainable. Historically, the memory chip business has been wildly cyclical. And yet, and I hesitate to say this, things are different this time. Already trading at an all-time high and up 29% year to date, Micron is one of the market’s best and least appreciated long-term plays on the AI trend. Even better, the stock is still cheap — just how cheap we’ll get to in a minute. But let’s be clear: Micron has always been a challenging company to value. The memory-chip maker has cutting-edge semiconductor technology, which it applies to both DRAM and NAND memory chips, used in PCs, servers, smartphones, cars, and every other imaginable