Wednesday was an eventful day in the life of flash memory maker Sandisk (SNDK 3.50%). A rival announced a technology that apparently reduces the need for computer memory, while the company divulged a pricey investment in a peer. These combined to drive the stock's price down by almost 4% by the end of that trading session.Thanks for the memoryOn Tuesday, Alphabet's Google announced that technology, TurboQuant, in its official research blog. This is a compression method that greatly reduces the memory cache ...